We popped up our 2008 Jayco 1006 PUP a couple weeks ago and found some standing water in it. It had rotted one of the boards you stand on when getting in to the bed, and ruined the top of one of our inside tables. After reading up on this, it sounds like the most logical problem is a faulty seal around the air conditioner. We had it covered, but not with a waterproof cover. I called the local RV shop and a new seal is $30 and then they quoted me $330 to install it. Is this something I can take on myself? I've watched some videos on it and aside from unwiring/rewiring the AC unit, it doesn't look difficult. Has anyone done this that can give some guidance?