It's amazing what a difference in sustain there is between my jazz and precision. I've fitted both with after-market bridges, a gotoh on my jazz and a badass II on my precision. I had the precision for about a year before I bought the jazz, and I guess I never really paid attention to the sustain until the jazz came along. I installed the badass almost immediately after purchasing the P, so I can't imagine how poor the sustain must have been with the original bridge. The pickup isn't very closed to the strings but I tried lowering it anyway just in case. At this point, I'm guessin that it's just an inherent quality of the body and/or neck woods, but I'm still wondering if there are any other tips for improving sustain?