Re: JB Jr. doesn't fit into '65 reissue?
Who knows, I might have guessed totally wrong, it seems pretty weird, it's just the only thing I can think of for this "lopsided" thing.
The best thing would be for you to wire these things in yourself - it's not hard at all, unless you want to get into more exotic wiring schemes*, and at least then you can see where the problems arise and fix them yourself without paying some oaf to do a crappy job.
*And even then, you have the guys on here to help you out. See my "Concentric pots" thread for a good example of an oaf needing help.