I have a 2011 Bighorn 3670RL, and I noticed water on the ceiling in the bathroom. It was over the shower area along the path of the AC duct. This was well after the shower was used, so I feel sure that it was not from that use. This is the only area that I have noticed this problem. My concern is that if it is on the ceiling, it could be in the ceiling. Is there a fix for this short of pulling the ceiling down and reinsulating the duct.