Dear @audionoobie : " anyone know if there would be a compliance issue with my AT VM760SLC mounted on the stock Technics SL1200GR arm? ""
No, you have not is inside the normal resonance frequency range. You can improve the quality reproduced sound with better headshell wires connectors and you can try too a different headshell build material than the stock one but you are safe about cartridge/tonearm issues.
Good that the KAB filter works for you.
Regards and enjoy the MUSIC NOT DISTORTIONS,
R.