ok this is about new jj caps after having them installed after the original ones went bad . 1.does it take some time for them to settle in or form or whatever? 2.is it normal for there to be some new sounds when the guitar is switched off ? you hear some popping sounds like pit pit ,pop ,pit pop ,like popping or crackling . like tar blowing up in a couldron or something . will it go away or is there something wrong? this is a 1989 or 90 jcm 800 2210 100 watt head .