Not sure I'm understanding correctly....there is not any damage being caused, just the mattresses hanging into the trailer, is that correct. If you let us know what year, make and model you have, it'll help sort this out. Various brands close up differently. If it's just that the tents and mattress just sorta hang into the cabin, that sounds pretty normal. There was no neat, attractive way to close up our ROO 23SS. If there is damage or the mattress is falling completely into the cabin, that's another story.
Trailerless but still have the spirit
2013 Rockwood Ultra Lite 2604 - new family
2007 Rockwood ROO HTT - new family
2003 Ford F-150
4 doggies - We support Adopt/Rescue.
Sam, you were the best!
Cubbie, Foxy, Biscuit and Lily - all rescues!