Somebody gave me a neglected, almost left for dead 2007 Squier Tele which had some parts missing. I have been bringing back to life with whatever bits and pieces I had at hand. It is almost functional now and I have left the relic look intact as I prefer guitars that look and feel used anyway. Two problems: - The guitar hums through some amps and not others. The type of hum that goes away when you touch metal parts (e.g. strings). Some amps hum like mad and others don't. Why could that be? - There's no continuity between neck metal cover and pot casings. Is this normal. I always thought tele neck cases were connected to earth... could that be the reason for the ghost hum?