Hi there, I've recently acquired a vintage handwired amp. 10 inch speaker, based - I think - on some sort of fender, although I can't pinpoint the exact model, and I'm starting to think it might be a custom design. Intrigued? The amp gives me the tone I've been dreaming about. Fast response, long sustain, spring reverb, breaks up like a old deluxe. But there are problems. Only the treble pot seems to work properly, the bass pot cuts out at 2 and never changes from then on. The mid pot does nothing. Sometimes the master pot goes from mute to extremely loud, sometimes it doesn't even cut sound at 0. And after about 20 mins of being on, it triples in volume, not nice when playing at night in a house with 13 people. (I live in a commune!) My question is, can anyone identify the kit? I'm looking for schematics. I think it came from Poland, and was built in 2000. And any amp wunderkinds out there that could diagnose the issues I mentioned would be much appreciated. I would like to try repair it myself. I know nothing but my housemate knows his stuff.. Maybe new pots, but any other tips of mods would be great to know. I play a 68 tele with a PAF through this thing, and I am one happy, happy papa of these kids. Looking forward to hearing from you guys!