I have a american standard jazz with Labella flats and just replaced the PUPs with the '60s vintage custom shop pickups thinking it would give me more growl and less brightness. My main rig is a Ampeg SVT-4Pro and for practice an old GB Shtl 6.0. It definitely has more bite (hotter) and a sharper clarity to the tone, but the brightness is still there. I down loaded the schematic from the Fender site and it says it has a .05 microfarad cap on the tone pot. The pots are all 250K. In order to lower the brightness would I use a larger or smaller size cap? Would changing the pot to a lower or higher resistive value change anything? I read the PUP reviews in the sticky and the vintage Fender pups seemed to be the right fit. I'm also going to try the DiMarzio Ultras to see if there's any difference. I have a P bass so suggesting buying a P is not an option.