Ok, this may have been the dumbest thing I've ever done. I was trying to use a set of 8 mm wheel spacers, but they wouldn't clear the hub lip. So I cut down the hub lip with a cutoff wheel, but I took too much material off and now there is not enough lip for the wheel to hang on. Obviously, now the wheels cannot be perfectly centered and I have an annoying vibration at speed. Can anyone think of a way to get my wheels centered without relying on the hub, which now cannot do its job? Maybe some custom threaded alignmment dowels or something? God, I feel like an idiot.