Kirk, The focus is on the DRV group. There have been known issues with water intrusion. In the 2014 time frame, about when Thor took over, DRV stopped using butyl tape behind the beltline moldings. They also elected to use a lower quality sealant on the exterior. Even after dealers informed them that the exterior sealant caulking deteriorates in a few months, the factory continues to use it. For the amount the DRV units cost, one expects or expected a unit of quality that isn't being delivered.