I would like people's input on this situation. My stock bridge & neck humbucker Pickups on a Gibson SG '61 Reissue (small pickguard model) has a low frequency hum. It gets louder as you turn up amp gain or volume or when I turn on my Fulltone overdrive pedal. I have eliminated ground loop causes between my pedal board (powered by Dunlop Brick) and amplifier. I have eliminated the amp itself as the cause of the hum, Dr Z amps are very quiet. Here's how I know it's the guitar's pickups: I merely turn the pickup selector to the middle position and the hum disappears. I experience this same problem on another guitar equipped with a Carvin M22SD humbucker. Again, I merely turn the PU selector to an in between position and the hum disappears. I do not hear this problem with my 90's PRS EG (US models). I do not hear this problem on the Fender Noiseless stacked humbuckers either. If the solution is to merely change pickups, I am ready to do that. But which one? But could there be a solution of merely correcting the wiring inside the guitar? Some input would be great.