[sourdough]

Your staple issue is a common one and has been mentioned several times on this and other forums as I recall. I don't believe it will, or has, been covered as memory serves. My trailer did the same thing and I also have the roof maintenance done yearly. Where the staples tried to start backing out I put patches of Eternabond tape over them to keep them from penetrating through the membrane (about 9 I think).

I wish you luck with pursuing a warranty claim and if you have luck, or not, please let the membership know. At the same time I would caution that the possibility of a denial is very high and the staple situation is common and folks deal with it, plus it certainly isn't specific to Keystone. It's the nature of the beast when we want a large trailer built to travel the highways and byways that endures a constant earthquake going through the body and chassis....and we want that vehicle to cost peanuts.