When I purchased my 2011 Rockwood Premier last summer, I should have asked the PO why he had a tarp over the top of the camper. The mildew stains in one section of the camper should have also clued me in that there was probably a leak somewhere. At any rate, I soon noticed a slow but persistent leak around the vent cover when heavy rains fall. I re-caulked the Fantastic Fan vent last Fall, checked for any cracks, etc, but all looked fine. Flash-forward to this past weekend and an evening of torrential rains...the dripping has returned. Is it possible this factory-installed fan wasn't installed properly? What should I be looking for? If I simply install a vent cover at this point, would that resolve the issue? Finally, can I use a MaxxAir cover on a Fantastic Fan vent? I've read conflicting opinions about this. thanks.