I have a problem where the top gasket on slides(D shaped) travels out while going down the road. Some time it's 2 inches some time it 4 ft. I tried putting screw and washer on each end but it rips out of screw. The gasket has been replaced 2 times once by me and once by an RV place. Also the up right gasket has a 2'ft slice in it. This was replaced by heartland at the goshen rally. There seems to be small pieces of rubber on the side wall of slide. I could us help since this has been going on since day 1. You think it's fixed then 1000 miles down the road and it happens again or even 500 miles. I attached end photo,s.