I have not heard of any issues that are more or less than usual . Check the owners forums at W.
Any cabover experiences stress from wind and rough roads .
Newer models have fiberglass caps which are just that...fiberglass caps which just cover the front of the cabover. They can leak from 6 years of uv and road stress if not maintained.
Know what signs to look for as far as leaks . At the bottom of a cabover where the moldings are, removing the vinyl trim to view the molding screws is a place to start. Rusted screws at low points are worth a closer look to find out why. I have removed screws where water then dripped out.
