Wow - I must been really ticked when I posted that first message. My apologies. Well, we have gotten through the summer and some tremedous downpours with no more leaks!! On the last trip to the dealer, they could not recreate the leaking we experienced at home using a hose and they also let it sit through a couple of rain showers with no leaking. They did some minor "precautionary caulking" on the roof around the sewer vent pipe and I took the Roadtrek home. I inspected the air conditioner (removed the rooftop cover). The original caulking all still seemed to be intact and there was no evidence of leakage. For good measure, I removed all the old gasket that sealed the rooftop cover and replaced it with new. So it looks like we've gotten past the "headache". I hope I didn't scare anyone away from buying a Roadtrek. With the exception of the frustrating leak we are really like it and are looking forward to many more roadtrips!