I have an active bass. It has a volume, bass, treble, and blend knob. The blend knob works nice in the neck pickup (50% and past the detent), but the lower of half of the blend (bridge/treble side) has a significant drop in volume, body, and all around signal (I have to play hard to play with distortion or it drops out). A multimeter determined it wasn't the pickups. WHAT DO?!?!