Hey TBers, I've been playing about 18 months now, so I guess I'm still relatively new to the bass. Loving it so far, just wish I had started earlier! Anyway I have a MIM Jazz that I've been thinking about upgrading. My question is pretty basic: What upgrade will have the greatest effect on my bass' tone? I've already changed my strings a couple of times. So besides that, what can I change? I am looking for a tighter, cleaner sound. Pickups? Bridge? Tuners? Install a preamp? Jump up and down like a monkey when I play? I mostly play jazzy funk/funky jazz fingerstyle with a little slap thrown in, but I also like reggae, hip hop, blues, classic rock, soul, anything funky. Thanks all.