So... I upgraded the pickups in my Jazz Bass to DiMarzio Model J's and they sound great! I've been thinking about rewiring the bass so it has a master volume, blend pot, and a master tone (instead of 2 volumes and a master tone). I found a diagram for this, and the diagram shows 250K pots (which is what it has now). However, I've heard that you should use 500K pots with DiMarzios. As long as I have to buy a blend pot and take everything apart... it would be real easy to swap out the 250K ports for 500K pots. I just wanted some opinions. What should I use with Model J's, 250K or 500K?