First is it automatic or manual. If auto I don't have a manual but you might get one online. If manual, get on a ladder and look for the problem on the coach end(miss fit someway). If you can roll it in by hand and it is fitted properly you most likely have a broken spring in on end or the other. This is a do it yourself IF YOU HAVE SEEN IT DONE BEFORE as they are finger or more breakers if not done correctly.
LEN