I seem to have a few dead poles on my neck pickup (02 American Fender Deluxe Jazz). At first I noticed less volume from the E and A string compared to D and G when using only the neck pickup. I tried adjusting the angle of the pickup to compensate but even with the pickup as high as it can go on the D and G there was still a noticable difference. Then while I was adjusting the screws I taped the pickup with the screw driver on the pole by the G string and it was very clear. I tapped (gently) each pole only to notice that both poles for the G string were fine. One of the poles on the D strings was not as loud and one of the poles for the A and E strings were completely dead (and the working pole not as loud either). I did the same test on the bridge pickup and it is fine for all poles. This bass is not that old and I take good care of it. Has anyone ever heard of this kind of thing?