Those voltages are right on the money for both IC's, so no apparent problem there.
Something else I would check for would be the possibility of your signal shorting to ground somewhere. One likely possibility for this that we've seen here before would be the back of one of the pots shorting against a signal-carrying solder joint on the back of the PCB. Check for clearance between the backs of the three lower-mounted pots and the PCB. In particular, the dual-gang A10K Blend pot is a bit thicker than the Drive and Level pots, so is more prone to making contact with the back of the PCB. To prevent this, you can insulate the backs of the pots with electrical tape (not necessary for pots with a plastic "skirt" on them) or slip a thick piece of paper between the pot and the PCB. A piece of a business card works well for this purpose.
Beyond that, I would suggest that the next step would be to trace out the signal path with a
SIGNAL TESTER. BYOC doesn't stock these anymore, but they're a very simple device and we can walk you through how to make & use one.
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