I've owned a Carvin LB70 fretless for around 10 years now. It is a great bass, koa body w/ maple stripes, ebony fingerboard, etc. The only thing is it buzzes so bad that I haven't used it on a gig in a few years. It has single coil J pickups and I know the deal w/ single coil buzz, but this is really bad. Multiple shops that I trust in town have said thats all it is. Shielding/grounding is all apparently fine..Anyone tried the Carvin noiseless jbass pickups? or any suggestions? the bass itself is really nice and I'd love to have it as an option again.