hi all. i have an odd situation here. i'm playing a fender geddy lee (japan) jazz bass, through SWR gear, and usually everything's dandy. but on occasion i'm getting a weird crackling sound from my tweeter. at first i thought there was a problem with the tweeter, but i don't think that's it, cuz usually it sounds ok. here's the interesting part: i was trying to figure out exactly what was causing the crackling... sometimes when i pop a string, but sometimes when i just move my fingers about whether i'm actually playing a note or not. and then i touched my bridge pickup with my right hand, while still moving my left hand around on the strings and playing some notes. hey! no crackling whatsoever. if i take my finger off the pickup, then the noise happens again. what's the deal? something going on here with bad shielding, or a ground problem or something? if someone could offer some advice to one who knows nothing about electronics, it would be greatly appreciated.