And what would be the cause in the first place? -->I have a 59' that went hybrid for a while and now I switched it back to a good ol' regular 59'. The problem is that it hums, like a single coil. It's as if it isn't hum canceling anymore or something. I checked to confirm that both coils are on in series, I made sure to re-solder the coils correctly(I've done it before) and it is grounded. It reads 7.15k on my meter, so what gives? It sounds phenomenal in the neck position with an RC A5, it's just this buzz/hum thing that I can't figure out. Maybe I might of pulled on one of those wires coming from the wind a bit hard?