We discovered the bottom of this little window had cracked and needed to be replaced. This was in late May or early June when we found it. This was never opened and still is not we took it to the dealer and as of this day still waiting for a replacement.The dealer is telling me the trouble is with the supplier (Heartland) .We will be leaving to go south late December and still no results not good. This is October 20/20012 Anyone else have these type of problems?