So I love the Dimarzio Model J pickup, especially the old cream-colored ones, very warm and growly high-output pickup when wired in series. I just picked up another one, put it in a bass, and it sounded a bit... odd. When I soloed it, the G-D string coil sounded a bit lower in output (not significant, but noticeable) than the E-A string coil with all polepieces even, so I jacked up the ones on the G-D coil to try and balance it out. This was my first indication there was something amiss, as I usually don't need to muck with the adjustable polepieces. Then I brought up the volume on the neck pickup to hear its balance with the J, and realize that when I was playing the Dimarzio I actually had my amp up rather loud, for some reason the Seymour-Duncan neck pickup (rickenbacker humbucker replacement) is much MUCH louder than the Dimarzio, even when I barely have the volume knob turned up at all on the neck pickup. So clearly there is SOMETHING wrong with the Dimarzio, as in all my past experiences with the Dimarzio Model J, both vintage and new models, it should be a very loud aggressive pickup. So I figure, ok, maybe I have something weird with the wiring, and I check it and I've got black+white wires soldered together to put the coils in series, the green to ground and red to hot, so I decided to swap the red and green thinking maybe it is out of phase with the neck pickup and that's causing something weird with the signal? No dice, still sounds extremely weak and wimpy. Any idea what would cause the pickup to have greatly reduced output? In the past, I've had individual coils not work, totally dead pickups, out of phase pickups, but I've never had a pickup that should be high-output reduced to a very low output before, does anyone know what might be the problem?