Cgs synth

Hello
Ive completed the sub osc, and everything seems to work fine except
for the prescaller. As soon as I enable it, I loose audio on the B
channel. As usual, Ive checked the obvious (solder, polarity, etc).
I dont have another 4017 to try right now, but will order one if you
think that could be the problem.

let me know if anyone has any ideas.

thanks,
Scott