The sliding cover over the passageway warped from a heavy snowfall two years ago. I don't suppose there is an easy way to straighten it out, and I'm not sure how easy it is to get a replacement (I have made some inquiries). I could plane the lip so I can slide the hatch up and off, but that leaves the warped fiberglass cover. This is a 1995 Macgregor 26 which is otherwise is almost perfect condition. So it's worth whatever it takes to make a repair. Any suggestions.