Alright, I want to replace the stock MEC pre-amp in my warwick with an Aguilar OBP-3 pre-amp. My bass has seymour duncan basslines ASB-5 phase I soapbars. I want to do a four knob configuration, stacked bass/treble. I also want to use a push/pull volume (or mid?) pot to control the mid frequency. Does anybody know the values of the pots I should use for the volume and blend? I emailed seymour duncan, and they wrote back to just make sure that the pre-amp works for active pickups and that was enough. Unfortunately the OBP-3 doesn't even come with the vol and blen pots, so I have no idea what I need to use. Suggestions?