Hey everyone i need some help and advice! My Universe has been screaming feedback at me on the distorted settings even when the gain on my preamp is set moderately low. I should add that this does not seem to be the case with my other Jems using the same settings. Ok so here's the deal. Firstly i tried some contact cleaner in the P/U selector but i don't know if this was a good idea, it certainly made no difference. Then i took out the pole peices in the back P/U to clean them as initially this was the one which was feeding back. After i did this the feedback seem to subside, however it simply shifted up to the neck P/U and now the screaming seems to have increased. Could this be a wiring problem, if so how can i tell and go about rectifying it? All the wires seem to have good contact on the P/U selector and pots. Help!!!