While we were in Yellowstone this past August, we discovered that the gray water tank on our 2006 Montana Mountaineer had broken loose from it's connection to the kitchen sink, and was laying in the belly of the camper. Not a happy situation when you are in Wyoming and you live in Florida
. Long story short, Good Sam Extended Service Plan refused to pay any part of the repair and we had to foot the cost ourselves. But that's another story and not the reason I am posting this comment. Listen to your rig. In the summer of 2012, we worked at a campground in NY state and one evening we noticed a very small puddle under our rig. We placed a bucket under the belly but never saw any more water. Before we put the rig away for the winter, we had it checked by a reputable dealer and they told us that the over-flow valve must have gotten stuck but all was OK. In April we hooked up, drove to Idaho and worked at a state campground for the summer. Again, we noticed a small puddle under the rig, we placed the bucket underneath, and we didn't see any more water. And then we traveled to Glacier and then to Yellowstone. Somewhere along the way, I heard a "BANG" but we were on a road that was under construction. NO big deal....right?? WRONG. The water was now flowing out of the bottom of the camper. We called a campground RV repair service and the technician was able to remove the tank. We finished the trip using a lot of take-put and washing dishes in the bathroom sink. The point I'm trying to make is: we should have had someone open the underbelly 2 years ago when the first puddle appeared. WE didn't listen you our rig.