Yep, these windows do have a leaking problem. You would think, by now, the manufacturer would have it under control. So many complaints here. When I picked up my new trailer in April, the floor and bed was wet from the rains. Actually, puddles on the floor. When I made the purchase, last October, the under bed storage was very wet. Dealer suggested the baggage door wasn't locked during transit. He would dry the unit before winter storage. Well, on pick-up day I had to wait 3-4 hours for the dealer to re caulk everything on the roof. Yesterday, while installing additional stop/turn lights and drilling through the metal frame and into the roof sandwich, between the outer and inner skins, water was leaking out the drilled hole. What does this tell me, more problems to come?