We traveled to Alaska this past summer, us in our 2004 R-vision 213 and good friends in a year old 24' Concord. When we got to Whitehorse YT on the Alaska Highway, he spent a day doing repairs. He removed the headliner and replaced all the screws attaching the steel roof cutaway to the floor of his cab-over entertainment center with a size larger and longer. It had separated enough to see daylight and let water infiltrate the cab, after that change I don't believe he had any problems on the rest of our trip.