Well it is open to debate at the moment. I cannot see that a very slight crack at time of test should be an instant fail. But some testers will be more pedantic than others. Some say that changes made on 1st Jan do not actually come into force until Ist April, so anything found should be an advisory and must be done before next test. But i have not seen that written in stone anywhere.
You haven't got a clue! Just an opinion there doesn't count in an MOT situation - Is that what you're saying between your mismatch posting?