Under braking my car will have big lumps in its braking power (meaning it is not even and will slow down slowly then all the sudden quickly and back to slow again) and the car shimmies from 75-105mph. It'll still go in a straight line, though. Is this an issue with my alignment, my rims being out of round or unbalanced, or my brakes? How do I fix it?? I got an alignment a few months ago, they said it was within spec, but they never told me what spec was or showed me my sheet.
