I replaced one on the Endeavor I used to own. It wasn't a piece of cake by any means but it wasn't that bad. Use a little silicon and a non metal pry bar, I made one from an old hammer handle. Worst part is the corners you have to cut them, then glue a piece on to hold the halves together. I ordered the new seal from Holiday Rambler. The slide cover will have to come off unless you can get to the middle, and put the slide half way out. Good luck.