[leemedic]

A few months ago, I noticed the belly of my Montana bulging. I pushed up on it, and it was full of water. I drilled two small holes in it and water drained for quite a long time. I took it into the dealer, told them what happen, and the said they checked it out finding nothing.

The dealer continued to tell me there if a "vent" on the top of the tank that will allow drain water if we overfill the grey tank.

Well, we are camping again, and the same thing happen. Yes, the indicator shows that the grey tank is full, but I don't think it should be dumping into the belly of my Montana.

My concern is there is insulation that is now soaked.

I think I have a bad tank. Your thoughts?