Ok this is a weird one that I'm trying to figure out. It's going to take some time. After playing for around 15-20 minutes guitar cuts out and shudders and come back with alot of distortion. Doesn't happen all of the time. Happened 2 out of the last three times I've played. Ok I changed guitars and it didn't happen last night so I'm thinking maybe it's the guitar. Checked the wiring looks ok. My question is can a guitar pickup have a short in the windings that could cause this or is it an all or nothing sort of thing. Could it be a pot? I'm going to try the guitar with another amp and cable to see if it happens. Any insight?