Some time back I took a foray into stacked single coil sized pickups. They have their own thing going on, and depending on the individual pickup, I generally like them. Never had any real noise issues in Strats, but I have tried three different brands of "Noiseless" Tele bridge pickups and always have a hum. It's lower grade (maybe) than a true single coil, but it's there nontheless. I'm going from memory here but I think that they all had baseplate ground wires and I am certain that the bridge plates had them. Have I inadvertently created a ground loop by soldering both to the volume pot? That's the only thing that makes sense to me. I appreciate any help I can get. Silence is golden.