Could be the weight of the slide when in . There should be 3/4" from the slide bottom the the floor when in . I ended up putting a couple of pieces of 3/4 plywood under the slide after pulling it in to hold the weight of the slide as my dinnette back that attaches to the slide wall was separating when in. At least I can walk on the slide when in without any separation.
It was a rainy few days at Algonquin Prov park...tarps kept us dry.
Wayne --Belle River (Windsor), Ontario
2013 Sunset Trail Reserve 25RB..
2015 White Chev Silverado 2500HD 4x4 (6.0 l gasser)
2003 Mountain Star 890SBRX Truck Camper