I’ve looked in vain for what could be causing it to happen, but I can’t seem to keep footswitch C from screwing up my gain block. I’ve tried many times.
Fwiw, switch C happens to be sending a midi command to my MacBook via USB…in case that proves relevant.
I’ve started fresh ones and no luck. But then I changed the incoming midi channel to the device from 1 to 5. Problem solved. But I’m not sure why the problem was there to begin with.