I think, you're right, Seth's right, but HE's wrong to discount the other effects too.
We're really chasing our tails here.
I think Seth is wrong in that he maintains that the direct coupling between the magnetised and the coil is producing a majority of the pickup signal.
Chasing our tails.....I don't think so. Regardless....ve found the thread a good one and its prodded me into finding out how pickups actually work.
BTW how are you going with the repairs on that bass??