I was just at my dealer to repair more of the many problems I've been having with my trailer,and I asked him if he could show me how to operate the slide out manually. He did show me were the nut is to do this but he said it should have come with a wrench which he could not locate. Is there a wrench available and if so how do I get one,and are there more detailed directions on how to operate the slide manually. Thanks for any help. Kevin