Hello Guys, I had my rear wheels changed and the tyre man said he could not put one of the wheel nuts back on because the thread on the stud was crossed. He said it was an easy fix to have it re-threaded. I read around and realise that this is an MOT failure point and could thus invalidate my cover. Need to get it fixed ASAP. Does anyone have the experience of going through this dilemma? What kind of costs am I looking at? Thanks in advance.