At this point Camping World is providing me with assurances in writing that anything that may result from the crack in years to come will be warrantied by them. They have also said if I am not happy with the repair they will talke the coach back and order new. If they follow thru I am happy with them. Hopefully the roof will be done as promised. From the looks of it and the conclusion of the techs the roof flexed and the fiberglass pulled away. It does not look like it was hit with something. Has anyone heard of a crack in the roof from flexing?