Hi, I have a P bass and one of the screws on the pickup starts coming loose all the time. It's not a big deal, but I have to remember to tighten it every few days or else the pickup starts slowly but surely lifting up towards the strings. and one time during a show by the last few notes of the last song it was rubbing up on the low E! (well, that's when I noticed it happens.) Any suggestions to keep it from loosening? i was thinking maybe a drop of crazy glue or something? Thanks!