Where do you think the leak is??

[RKassl]

On our trip to Alaska we found that we have a leak in the gray water tank. Here is what I know. The wife and I can have two days of showers and general usage of gray water with no leak. On the third day of showers and daily use the gray tank will leak. What would be your best guess where our leak is? I would think it must be to the top of the tank? Is this where a vent pipe might be? When you drop the belly of the Monty can you actually see the gray tank on a 2955?

Any advice or comments would be appreciated.

Our trip to Alaska was an amazing journey, we are now resting in West Glacier KOA.

Thanks