Yes, the dealer said there is a low spot that is causing this, and that is very clear, but their service department simply said just keep it on an angle so maybe it won't pool there. I agree, this is absolutely not a proper solution, we want to be able to keep it level. But, while the dealer admits there is a low spot, the manufacturer won't cover to the repair under warranty, and the dealer is not fixing it unless the warranty covers it. Very frustrating as this is a brand new trailer and this has all been going on since three weeks after we bought it. So basically we bought a lemon, and none of them will make it right. We are very heated about this whole scenario and know that they won't fix it or make it right simply because it would cost them a lot of time and money to properly fix it in taking the membrane off, fixing the issue and then putting the membrane back on and resealing it all. It shouldn't matter how much it costs them, they should fix it, not leave us with a trailer that won't be worth half what we paid for it, and will in short time have serious water damage to the roof structure and walls. But unfortunately, by the time that happens it will be likely out of warranty and then Keystone nor Camping World will still not step in and make it right. Thanks for the comments, a filing with the BBB is a great idea.