Bluegrass Night and Open Mic Nights are also pretty great, at least in the past in my experience.

Probably worth opening the control plate up and taking some contact cleaner to the electronics (pots, switch, input jack), to start. Unless you have a hollow body where it's tough to get access to all of that, disassembly and reassembly should be pretty straight forward and it's really only an exercise of unscrewing the plates and screwing them back in afterwards.