Well I just went to install my winter tarp on the 770SL and found the left rear corner of the roof very soft. has to be some extensive rot underneath. Not any evidence of a leak on the interior of the camper. I sure would like to put my foot where the sun never shines on the people at Travel Lite. I believe the date of my camper manufacture was 8/13. So it's not in the time frame of the shop managers departure. I'm not about to just try and fix the left corner. Already had the leak in the front to deal with. Maybe 6 months later it will be in another place. I've got a 24x28 shop I keep my 2 boats in, so I think late winter, or early spring I'll bring the camper inside and pull the whole roof off and fix it right. I'm certainly not sold on the rubber roof fabric. Might see if I can do it in aluminum.