I have a 30ft 2010 Coachman with one slide out, I have a 2013 GMC Sierra Single Cab work truck to pull it. I'm the second owner so it's only been exposed to outside conditions 5 times prior to me, the older couple bought it new off the lot and used it 5 times otherwise it has always been stored inside at room temperature for the past 10 year. His gap is less as it should be?