Ive looked through the forums and havent found this problem, so I could use any suggestions: I recently changed out the pickups and preamp in my Warwick Jazz FNA, and al works well, except for the blend control. This will sound like an out of phase PU, but thats the first thing I tried and there was only a tiny difference. New pickups are Bartolinis, preamp is Aguilar OBP-3. The problem remains whether passive or active, and whether the MM is in series or split. I used the original blend control (which had a nice, smooth slope to it before I changed everything), but it is marked at 220K, and measures 215K, which is a bit under the 250K that the Barts would like to see. The bass was star grounded with the blend body as the ground point; I left this. Ive also checked my wiring with continuity testers to make sure there were no shorts, etc. Now, onto the problem: Either pickup alone sounds great, but as soon as I begin to blend in the other, there is a BIG drop in volume, the bass falls off, and the midrange gets phasey sounding (all of this is why I figured out of phase and switched the jazz around). Any ideas?