Okay, So I built a Tele last year, all good until I picked up last week and terrible crackling on every setting, three way switch etc standard pots. The noise was apparent when turning vol knob and moving switch and generally jiggling it about. Now I would say checking all soldered joints, the soldering was really superb on this. anyways, long story short, the cavity was lined with copper tape, which I put in on good authority from various websites. I ripped all this out, put it back together and hey presto, no issues at all. I guess some parts were either touching and earthing out creating the noise from the copper tape. So in trying to avoid issues I simply created them with this damn tape! any thoughts ?