I think there is a way they can 'true' the tire up but this involves taking off rubber until the whole tire is at the same level. I flat-spotted a new tire before by locking my brakes up for quite a distance. I just kept trying to roast the tires so it was smoother (which was sorta fun

), I also had it turned around so the toe was riding on a smoother spot. I actually sold it like this but I had some new SZ50s (from the tirerack

) waiting.