leaking tank - 1992 34' Excella 1000

[tomcook]

An "on site" mechanic familiar with Airstreams says my fresh water tank leak is not a valve or connection.

When he tried to pull belly pan, he found it had been sealed with something that he could not break loose. After removing all the bolts, he bent a screwdriver trying to pry it free.

I've moved on and am considering trying to fix it myself but have some very basic questions.

First, how do you place it on jack stands when the only place safe to put weight is on the jack pad - which is occupied by the jack?

Second, is the sealant original or an overzealous previous owner? Any ideas on how to break the seal?

Anybody with experience in dropping the tank on a 3 axle?

Thanks.

Tom