I just recently acquired a Highway One Jazz from a fellow TBer and it came with seymour duncan Antiquity II pups (which I Love). I decided to install a pre amp the Audere JZ3. When I did, I realized that when whenever I solo the neck or bridge pup i'm getting an unreal amount of hum and hizz. Can anyone out there give me some ideas on how to deal with this problem before i take the bass to a tech and shoot out a bunch of money???