i was thinking of getting the SEYMOUR DUNCAN 3 band preamp the problem is this my fendr jazz has 3 pickups. i added a p between the j's. the preamp is pre-wired for two pickup applications with 4 control knobs(blend, master volume, stacked bass/treble, and mid controls).my bass is setup right now with master voilume and blend for the two j pickups and a volume for the p pickup. the volume is a stacked knob with tone for all. can u use star gorunding with this? is there any way to wire it? i want it if possible to be stacked two volumes. one for the jazz pickups. and one for just the p , the blend for the j's. then stacked bass/treble, and mid controls. any way tomake the mid and blend on a stacke pot probly not?