With the OP having a 'professional' mechanic actually working on it, We'd hope adjustment was already adjusted/corrected, but these days......
As far as being 'hub-centric', they are, but I've seen real butcher jobs wafer-wheeling/chiseling/hammering/etc. to remove the swaged stakes. Then They slip the drums over the studs & crank down the wheels over them, but the drums get deformed & may be centered, but they're not square.
