So, I was looking for a way to keep the volume relatively the same when changing from single coils to humbucker. My experience so far have been the singles are about half the volume (or close to that). I figured, humbucker, twice the coils, twice the volume. After looking around online I guess PRS installs resistors, but cant find anything about this issues for bass, or how/which resistors to use. I plan on wiring each pickup with an on-off-on DPDT. Up - North coil Middle - Humbucker Down - South Coil. Basically, I want the same volume between all three. Any idea??