I just got done building a parts Jazz. Pickups are brand new DiMarzio Area J's. Wiring scheme is standard Fender. The neck pickup makes a ton of high pitched noise when it touch it--I'm not touching the polepieces or anything, just the pickup cover. Double checked the wiring. Tone is great, but the scratchy noise is unbearable--I rest my thumb on the neck pickup when playing, so there's no avoiding it. Anyone have any ideas? I mailed DiMarzio, no response after about a week.