The most likely thing that would happen that you can't see is a bent axle.Most shops have no way of checking axles but they are relatively inexpensive and I would replace them regardless.It only takes a couple thousands of an inch to cause prolems.
It is one of those things that will cause a flier every now and then,because the axle will rotate to the high side on some shots and to the low side on other shots and consistancy suffers.This is barely noticable to most but to some it is quite noticeble.
We all know that confidence is so important and now that I have mentioned to you that it could be a problem,you will never have complete confidence that a flier was caused by you or the bow.[:-]