I have a '63 Precision w/stock PU. In '72 I installed a stock Jazz PU in the bridge position. It's wired into the stock V and T pots, and is switchable with mini-toggles. The problem is - I've never used it because the J is much weaker than the P. As soon as I switch in the PJ combo, or worse yet, the J alone, the level drops way down. Other than add a pre-amp, any suggestions on how to level out the sound? I've searched this forum, but if there is a thread that deals with it, I missed it.