Hey guys, I just acquired a really nice MIM Fender Jazz in a trade with Tommy Gilstrap. It's a great bass and it feels awesome under my fingers. The body is ash I believe, (correct me if I'm wrong, I'm going by the grain) and it has a rosewood fretboard. Here's where the fun begins. The electronics and knobs are as follows: It has a 3 knob layout, tone (neck pickup), tone (bridge pickup0, and master volume. Now there are 2 toggle switches. Both in the down position means that it is running both pickups in series. Both in the up position means that it's running both pickups in parallel. One switch up and one switch down means that it is running the neck pickup only. One switch down and one switch up means that it is running the bridge pickup only. It's weird, I know, but it's the way it was wired. Tommy said it was wired that way when he got it too. The bass has USA pickups in it and has the classic Fender Jazz thump but I can't get any highs out of it to save my life. It has a fairly new set of bright nickels on it so strings aren't the issue. I'm wondering if I switch the control plate out to one that Tommy sent me from a USA Jazz wired volume/volume/tone would help me get the highs I needed out of the pickups or would I have to drop an active preamp in the like an Audere or J Retro? I really don't want to put too much money into modding this thing but I think this bass can sound better than it does now. It definitely has potential IMO. Does anyone have any advice or previous experience with a similar situation?