hello all. have had a look around and can't find an answer to my questions but sorry if this is going over the same ground again..first posting and all that. I think there's a problem with the volume pot on my fender precison - getting some pretty abrupt changes in volume as I tweak it and I want to test it (and the tone pot too) before getting replacements in case it's something else. to get a genuine accurate reading from a pot do i need to completely detach it from the other circuitry in the guitar? i know how to test the pots but have been getting odd readings and think this might be because it's all still hooked up. on a simillar topic, what are your suggestions for pot values/types and cap sizes for a 1989 Japanese Precision. I'm after a fairly low/dark tone so guessing I should stick with the 250k size..currently type A. anyone got strong feelings/arguments for using type B on either volume or tone? thanks very much.