A person in the campground I was in cranked up his roof and then put 2x4's next to each roof support(cable tracks). Later I went over and asked him why he did that. He said that he did it as a safety measure in case a cable gave way while set up and someone was in camper, thus keeping the roof from coming down. Said he cut them about 1 inch shorter than his fully raised roof. He also said some people do the same thing only to take some tension of the cables. Said they raise the roof and put 2x4's in and lower roof just on top of boards. Helps take the load of cable system. HAs anyone heard of this? This is the first for me.