i think i know what the problem is but im going to need some help with it. The drive knob, is somehow damaged, when you turn it to about 10 oclock it crackles a bit and you can hear the actuall power and gain trying to break through, if you push the drive knob down it seems to connect properly or whatever its trying to do and i get more gain at this position than i do with the whole drive knob turned all the way up, i have tried to remove the pcb but its very difficult as the
input jacks ob struct you from completely removing the pcb from the casing, what can i do to fix the knob?