I just installed a new harness and the volume pot is not working correctly. When I turn down the volume all the way, there is still signal. It is faint, but still there. So the volume pot is able to partially turn the signal down, but not all the way. I read on one thread that I may not have grounded the pot correctly. But I checked my schematic, and it seems right. Any suggestions? Moving the pot around when not attached to the pickguard does affect the sound, but I can't tell if the pot may be bad, in need of a shot of de-oxit, or if my wiring and or soldering job is faulty.