Hi, all. Been out of bass playing for some time, but I'm looking to start up again. First likely step: Order me up a Carvin kit bass in the next few weeks. So, I have a couple of questions for those of you who may have experience with these or wiring and electronics for Jazz basses in general... 1) If it were up to you, would you upgrade the bass to Carvin's 18V active/passive electronics OR put in a Tonestyler passive tone control? (And why?) 2) If I were to upgrade the bass to Carvin's 18V active/passive electronics, is there any reason I couldn't also wire the bass for series/parallel operation via a push-pull volume pot? And before anyone tries to talk me out of the Carvin kit, this is theoretically going to my my last bass, and I really want to assemble and set it up myself. Within that context, I really like Carvin's 5-string specs (34" scale, 19mm string spacing), reputation for quality, and price point. Thanks in advance for any input, ideas, and advice!