Hello everyone. I have a bass with EMG J pickups in it, and an OBP-3 preamp. The volume pots do not seem to shut off. When rotated to the off position, I still have volume and bleed. I checked the grounds, re-soldered them, seems to not have effected it. I am leaning toward bad pot(s), but when I cleaned up one solder joint the problem "jumped" to the other volume pot. Weird, not sure why. Anyone have this system in their instruments and experienced similar? before I completely re-wire this, want to see if there is something obvious I missed. Thanks.