RV Repair: moisture at the base of the table, grey tank, table legs

Question
We own a 2005 Sprinter and recently we noticed what appeared to be moisture of some sort at the base of the table legs.  It was on the chrome base that is screwed into the carpet and looks as if it has crystallized.  It’s very hard and sticky. Is it possible that there was glue under the carpet and due to high temperatures it liquefied? It almost looks like battery acid build up on a car battery.  It has corroded the base of the table leg. We also noticed on the benches that there is moisture or water damage coming from the floor up.  Any idea what may be causing this?  The area where the table is located is right above the grey tank.  We didn't see any problems with the tank.

Answer
You need to call Customer Service at Keystone.
It sounds like something that they could help you with.
I actually have never heard of such a thing. I doubt it has anything to do with the tank. I'm guessing it is some kind of condensation problem.
Dave