Securing Slides for safer travel, saves seals
When i took my new Flagstaff 831 into mexico, i found the top seals had slipped, and concluded that there was too much end to end surge of the slide frame (box). After discussion with factory, I fabricated two metal hooks that fit over the slide top flange inside, and attached them to an eye bolt fastened into a metal side member on opposite side of trailer by way of 30" bungy. I figure about 160 to 180 lbs of inward force pulling the slide against the trailer frame and seals. On my next trip down to mexico nearly 2000 miles in mexico, the slides had no seal problem. I did fabricate two plastic blocks that were placed in the end gaps when the slides were in. It was difficult to keep them in place. I think the bungy pressure did most of the work.
Pain in the neck to require this, and it takes some strength to set the bungys, but it seems to do the trick. I only did the big slide, as i had no problem with bedroom slide. The hooks were made to spread the pressure across 8" of the flange so as not to create a point stress.