Sh101 Sub-Oscillator volume

Hey all!

I’ve been repairing up my sh-101, replaced power jack, switch, and headphone out, but just realized that along with the rest, the sub oscillator is a fraction of the volume it should be.

The slider range is still working as intended, and reading the correct resistance, so I’m tracing the rest of the circuit to see what might be the cause.

Does anyone have any experience with this issue, or have a better understanding of the implications of the signal paths for me to check over?