80dB now but still needs improvement at 1KHz

Simulation isn't fast but if you let it complete and do an FFT on the last 30 seconds, it's 80dB down at all unwanted harmonics.
There do however seem to be unwanted sidebands close in either side of 1KHz
Any suggestions for improvement?

Version 4
SHEET 1 2196 932
WIRE 400 -704 368 -704
WIRE 608 -704 464 -704
WIRE -80 -624 -176 -624
WIRE 16 -624 -80 -624
WIRE 112 -624 96 -624
WIRE 128 -624 112 -624
WIRE 240 -624 208 -624
WIRE 336 -624 240 -624
WIRE 368 -624 368 -704
WIRE 368 -624 336 -624
WIRE 400 -624 368 -624
WIRE 512 -624 464 -624
WIRE -80 -608 -80 -624
WIRE 240 -592 240 -624
WIRE 336 -576 336 -624
WIRE -176 -544 -176 -624
WIRE -208 -496 -288 -496
WIRE -80 -496 -80 -528
WIRE -80 -496 -112 -496
WIRE 0 -496 -80 -496
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WIRE 288 -480 240 -480
WIRE 336 -480 336 -512
WIRE 336 -480 288 -480
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WIRE 288 -448 288 -480
WIRE 320 -448 288 -448
WIRE 320 -432 320 -448
WIRE 288 -400 288 -448
WIRE 288 -400 240 -400
WIRE 336 -400 288 -400
WIRE -288 -368 -288 -496
WIRE -192 -368 -288 -368
WIRE 0 -368 0 -496
WIRE 0 -368 -112 -368
WIRE 240 -368 240 -400
WIRE 336 -352 336 -400
WIRE 416 -336 384 -336
WIRE 608 -336 608 -704
WIRE 608 -336 480 -336
WIRE -80 -256 -176 -256
WIRE 16 -256 -80 -256
WIRE 112 -256 112 -400
WIRE 112 -256 96 -256
WIRE 144 -256 112 -256
WIRE 240 -256 240 -288
WIRE 240 -256 224 -256
WIRE 336 -256 336 -288
WIRE 336 -256 240 -256
WIRE 384 -256 384 -336
WIRE 384 -256 336 -256
WIRE 416 -256 384 -256
WIRE 512 -256 512 -624
WIRE 512 -256 480 -256
WIRE -80 -224 -80 -256
WIRE 512 -224 512 -256
WIRE 608 -224 608 -336
WIRE -176 -176 -176 -256
WIRE -288 -128 -288 -368
WIRE -208 -128 -288 -128
WIRE -80 -128 -80 -144
WIRE -80 -128 -112 -128
WIRE 0 -128 0 -368
WIRE 0 -128 -80 -128
WIRE 176 -128 0 -128
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WIRE 320 -128 288 -128
WIRE 448 -128 400 -128
WIRE 288 -16 288 -128
WIRE 288 -16 -80 -16
WIRE 320 -16 288 -16
WIRE 448 -16 448 -128
WIRE 448 -16 400 -16
WIRE 48 48 48 32
WIRE 448 48 448 -16
WIRE 512 48 512 -144
WIRE 512 48 448 48
WIRE -80 96 -80 -16
WIRE 16 96 -80 96
WIRE 448 96 448 48
WIRE 448 96 176 96
WIRE 16 160 -80 160
WIRE 592 160 176 160
WIRE 608 160 608 -144
WIRE 608 160 592 160
WIRE 736 160 608 160
WIRE 832 160 736 160
WIRE 512 192 512 48
WIRE 592 192 592 160
WIRE 48 224 48 208
WIRE -464 256 -544 256
WIRE -400 256 -464 256
WIRE -80 272 -80 160
WIRE 16 272 -80 272
WIRE 224 272 16 272
WIRE 304 272 288 272
WIRE 448 272 448 96
WIRE 448 272 384 272
WIRE -80 288 -80 272
WIRE 16 288 16 272
WIRE 736 288 720 288
WIRE 832 288 816 288
WIRE 912 288 896 288
WIRE -544 304 -544 256
WIRE 512 304 512 272
WIRE 592 304 592 272
WIRE -400 320 -400 256
WIRE -80 384 -80 368
WIRE -32 384 -80 384
WIRE 16 384 16 352
WIRE 16 384 -32 384
WIRE 768 400 768 384
WIRE -32 416 -32 384
WIRE 592 416 592 368
WIRE 720 416 720 288
WIRE 720 416 592 416
WIRE 736 416 720 416
WIRE 816 432 800 432
WIRE 912 432 912 288
WIRE 912 432 896 432
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WIRE 736 448 512 448
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WIRE -400 496 -544 496
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WIRE 592 528 592 480
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WIRE 448 624 448 592
WIRE 448 624 352 624
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WIRE 512 624 448 624
WIRE 592 624 592 592
WIRE 592 624 512 624
WIRE 352 656 352 624
WIRE -544 752 -544 656
WIRE -464 752 -544 752
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WIRE -400 752 -464 752
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WIRE 512 752 400 752
WIRE 624 752 512 752
WIRE 736 752 624 752
WIRE 832 752 736 752
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WIRE 912 752 832 752
WIRE 400 800 400 752
WIRE 512 800 512 752
WIRE 624 800 624 752
WIRE 736 800 736 752
WIRE 832 800 832 752
WIRE 912 800 912 752
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WIRE 512 912 512 864
WIRE 624 912 624 864
WIRE 736 912 736 864
WIRE 832 912 832 864
WIRE 912 912 912 864
FLAG -624 496 0
FLAG 768 384 V+
FLAG 48 224 V-
FLAG -464 256 V+
FLAG -464 752 V-
FLAG -32 416 0
FLAG 736 160 output
FLAG 48 32 V+
FLAG 768 480 V-
FLAG 352 656 0
FLAG 320 -432 0
FLAG 912 912 0
FLAG 832 912 0
FLAG 736 912 0
FLAG 624 912 0
FLAG 512 912 0
FLAG 400 912 0
SYMBOL voltage -544 288 R0
WINDOW 123 0 0 Left 0
WINDOW 39 10 135 Left 2
WINDOW 0 12 7 Left 2
WINDOW 3 15 104 Left 2
SYMATTR SpiceLine Rser=0.01
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SYMATTR Value 6
SYMBOL res 400 256 R90
WINDOW 0 -7 54 VBottom 2
WINDOW 3 37 50 VTop 2
SYMATTR InstName R1
SYMATTR Value 10.5k
SYMBOL cap 288 256 R90
WINDOW 0 0 32 VBottom 2
WINDOW 3 32 32 VTop 2
SYMATTR InstName C1
SYMATTR Value 15n
SYMBOL cap 32 352 R180
WINDOW 0 -33 54 Left 2
WINDOW 3 -49 18 Left 2
SYMATTR InstName C2
SYMATTR Value 15n
SYMBOL polcap -416 320 R0
SYMATTR InstName C4
SYMATTR Value 100�
SYMBOL res 272 -144 R90
WINDOW 0 -1 46 VBottom 2
WINDOW 3 35 56 VTop 2
SYMATTR InstName R7
SYMATTR Value 6.34k
SYMBOL res 416 -144 R90
WINDOW 0 -4 61 VBottom 2
WINDOW 3 39 55 VTop 2
SYMATTR InstName R8
SYMATTR Value 13k
SYMBOL njf -112 -176 R90
WINDOW 0 -37 23 VRight 2
WINDOW 3 -9 -3 VRight 2
SYMATTR InstName J1
SYMATTR Value J112
SYMBOL voltage -544 560 R0
WINDOW 123 0 0 Left 0
WINDOW 39 10 135 Left 2
WINDOW 0 10 0 Left 2
WINDOW 3 15 104 Left 2
SYMATTR SpiceLine Rser=0.01
SYMATTR InstName V2
SYMATTR Value 6
SYMBOL polcap -416 592 R0
SYMATTR InstName C5
SYMATTR Value 100�
SYMBOL res -96 272 R0
SYMATTR InstName R2
SYMATTR Value 10.5k
SYMBOL res 496 -240 R0
SYMATTR InstName R9
SYMATTR Value 4.7
SYMBOL pjf -112 -544 R90
WINDOW 0 -34 29 VRight 2
WINDOW 3 -9 -1 VRight 2
SYMATTR InstName J2
SYMATTR Value J175
SYMBOL schottky 464 -720 R90
WINDOW 0 0 32 VBottom 2
WINDOW 3 32 32 VTop 2
SYMATTR InstName D3
SYMATTR Value BAS40HY
SYMATTR Description Diode
SYMATTR Type diode
SYMBOL schottky 416 -240 R270
WINDOW 0 32 32 VTop 2
WINDOW 3 0 32 VBottom 2
SYMATTR InstName D5
SYMATTR Value BAS40HY
SYMATTR Description Diode
SYMATTR Type diode
SYMBOL schottky 464 -640 R90
WINDOW 0 0 32 VBottom 2
WINDOW 3 32 32 VTop 2
SYMATTR InstName D2
SYMATTR Value BAS40HY
SYMATTR Description Diode
SYMATTR Type diode
SYMBOL schottky 416 -320 R270
WINDOW 0 32 32 VTop 2
WINDOW 3 0 32 VBottom 2
SYMATTR InstName D1
SYMATTR Value BAS40HY
SYMATTR Description Diode
SYMATTR Type diode
SYMBOL res -96 -384 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R3
SYMATTR Value 68
SYMBOL OpAmps\LT1994 80 128 R0
WINDOW 3 10 -65 Left 2
WINDOW 0 11 -95 Left 2
SYMATTR InstName U2
SYMBOL OpAmps\LT1057 768 368 R0
WINDOW 0 19 104 Left 2
WINDOW 3 18 130 Left 2
SYMATTR InstName U1
SYMBOL schottky 496 304 R0
WINDOW 3 53 -28 VRight 2
WINDOW 0 53 91 VRight 2
SYMATTR Value BAS40HY
SYMATTR InstName D4
SYMATTR Description Diode
SYMATTR Type diode
SYMBOL schottky 576 304 R0
WINDOW 3 50 -51 VRight 2
WINDOW 0 48 74 VRight 2
SYMATTR Value BAS40HY
SYMATTR InstName D6
SYMATTR Description Diode
SYMATTR Type diode
SYMBOL cap 432 528 R0
SYMATTR InstName C7
SYMATTR Value 10�
SYMATTR SpiceLine V=6.3 Irms=0 Rser=0.001 Lser=0 mfg="TDK" pn="C3216X5ROJ106M" type="X5R"
SYMBOL res 336 496 R0
SYMATTR InstName R11
SYMATTR Value 220k
SYMBOL res 496 496 R0
WINDOW 3 29 83 Left 2
SYMATTR Value 220k
SYMATTR InstName R12
SYMBOL res 224 -608 R0
WINDOW 0 -62 49 Left 2
WINDOW 3 -66 84 Left 2
SYMATTR InstName R13
SYMATTR Value 100k
SYMBOL cap 320 -576 R0
WINDOW 0 -31 5 Left 2
WINDOW 3 -36 50 Left 2
SYMATTR InstName C6
SYMATTR Value 22�
SYMATTR SpiceLine V=6.3 Irms=0 Rser=0.0028 Lser=544p mfg="W�rth Elektronik" pn="885012107005 WCAP-CSGP 0805" type="X5R"
SYMBOL res -96 -624 R0
WINDOW 0 36 45 Left 2
WINDOW 3 33 76 Left 2
SYMATTR InstName R4
SYMATTR Value 100k
SYMBOL res -96 -240 R0
WINDOW 0 36 45 Left 2
WINDOW 3 34 76 Left 2
SYMATTR InstName R6
SYMATTR Value 100k
SYMBOL res 224 -640 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
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SYMATTR Value 100k
SYMBOL res 240 -272 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R15
SYMATTR Value 100k
SYMBOL res 224 -384 R0
WINDOW 0 -53 15 Left 2
WINDOW 3 -61 47 Left 2
SYMATTR InstName R17
SYMATTR Value 100k
SYMBOL cap 576 528 R0
SYMATTR InstName C8
SYMATTR Value 10�
SYMATTR SpiceLine V=6.3 Irms=0 Rser=0.001 Lser=0 mfg="TDK" pn="C3216X5ROJ106M" type="X5R"
SYMBOL res 416 -32 R90
WINDOW 0 -4 61 VBottom 2
WINDOW 3 39 55 VTop 2
SYMATTR InstName R5
SYMATTR Value 680k
SYMBOL res 592 -240 R0
SYMATTR InstName R10
SYMATTR Value 4.7
SYMBOL res 112 -640 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R19
SYMATTR Value 100k
SYMBOL res 112 -272 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R20
SYMATTR Value 100k
SYMBOL res 896 560 R0
SYMATTR InstName R16
SYMATTR Value 100k
SYMBOL cap 896 800 R0
SYMATTR InstName C10
SYMATTR Value 100�
SYMATTR SpiceLine V=6.3 Irms=0 Rser=0.002 Lser=0 mfg="TDK" pn="C575OX5ROJI07M" type="X5R"
SYMBOL cap 816 800 R0
SYMATTR InstName C12
SYMATTR Value 100�
SYMATTR SpiceLine V=6.3 Irms=0 Rser=0.002 Lser=0 mfg="TDK" pn="C575OX5ROJI07M" type="X5R"
SYMBOL cap 720 800 R0
SYMATTR InstName C13
SYMATTR Value 100�
SYMATTR SpiceLine V=6.3 Irms=0 Rser=0.002 Lser=0 mfg="TDK" pn="C575OX5ROJI07M" type="X5R"
SYMBOL cap 896 272 R90
WINDOW 0 0 32 VBottom 2
WINDOW 3 32 32 VTop 2
SYMATTR InstName C9
SYMATTR Value 10�
SYMATTR SpiceLine V=16 Irms=0 Rser=0 Lser=0 mfg="Murata" pn="GRM188R61C106KAAL" type="X5R"
SYMBOL res 832 272 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R18
SYMATTR Value 220
SYMBOL cap 96 -464 R0
SYMATTR InstName C15
SYMATTR Value 1�
SYMATTR SpiceLine V=16 Irms=0 Rser=0.007 Lser=0 mfg="TDK" pn="C3216X7RIC105K" type="X7R"
SYMBOL cap 608 800 R0
SYMATTR InstName C11
SYMATTR Value 10�
SYMATTR SpiceLine V=6.3 Irms=0 Rser=0.001 Lser=0 mfg="TDK" pn="C3216X5ROJ106M" type="X5R"
SYMBOL cap 496 800 R0
SYMATTR InstName C14
SYMATTR Value 10�
SYMATTR SpiceLine V=6.3 Irms=0 Rser=0.001 Lser=0 mfg="TDK" pn="C3216X5ROJ106M" type="X5R"
SYMBOL cap 384 800 R0
SYMATTR InstName C16
SYMATTR Value 10�
SYMATTR SpiceLine V=6.3 Irms=0 Rser=0.001 Lser=0 mfg="TDK" pn="C3216X5ROJ106M" type="X5R"
SYMBOL res 496 176 R0
WINDOW 0 36 27 Left 2
WINDOW 3 39 52 Left 2
SYMATTR InstName R21
SYMATTR Value 4.7
SYMBOL res 576 176 R0
WINDOW 0 38 27 Left 2
WINDOW 3 40 51 Left 2
SYMATTR InstName R22
SYMATTR Value 4.7
SYMBOL res 912 416 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R23
SYMATTR Value 100
SYMBOL cap 320 -352 R0
WINDOW 0 -27 5 Left 2
WINDOW 3 -35 47 Left 2
SYMATTR InstName C3
SYMATTR Value 22�
SYMATTR SpiceLine V=6.3 Irms=0 Rser=0.0028 Lser=544p mfg="W�rth Elektronik" pn="885012107005 WCAP-CSGP 0805" type="X5R"
TEXT -584 840 Left 2 !.tran 0 300s 0s startup
TEXT -400 -720 Left 2 ;Edward Rawde's high purity sinewave oscillator. 3 Nov 2024