I've got the towing mirrors on my truck. A friend borrowed it yesterday and was backing up and caught the right mirror on a tree (going backwards), it flexed it backwards (which I don't think it's supposed to do!). It didn't do any damage other than now the mirror won't lock in place anymore (forward & backward). I see a cover under there that looks like maybe it can access the hinge. Is this mirror broken or is something that can be fixed?