Auntielo, you are about to enter the great void, more commonly known as "the black hole of warranty work".
This is where your dealer will point the finger at FR, and FR will probably tell you to take it to the dealer. In any case, your rig will be in for repairs, for an unknown length of time, while your still making payments on it.
There is no lemon law pertaining to RV's, and unless FR decides to give you a new one (don't hold your breath) out of the goodness of their heart (HA!!!), your stuck with the one you have. The leaks and mold come free of charge.
Even if they find and fix the original leak, you will always worry about mold, rot, and delamination, even though FR or the dealer will say it's not a problem.
Then, after the one year warranty is over, neither will lift a finger to help you, and your now the proud owner of a rig that's lost half it's value.