Ok guys heres the deal I picked up a really nice Fender Jazz here a couple weeks ago. I only played it a little bit the day I picked it up from a buddy and then a little bit after I got home. well tonight I got it out hooked it up and started to practice some well when I get it close to my body it starts a buzz or humm like a RFI problem but if I push it away it quits. I didn't notice it either time I played with it the day I bought it. now here is a question could the wires in my chest be making it do this I have a bunch of wires holding the center of my chest together plus 4 stents in there also allof which are surgical stainless I'm assumming. most all of my basses are really quiet using the same amp and cord. am I going to need to shield this bass in all the cavities?? ok here is a little about the bass it is passive pickups MIM Jazz. all stock nothing has been changed really nice Bass.