First of all, welcome to the forum! Sorry to hear about your leaking problem. I am certainly no expert on this subject, but I did have some leaking on my 09 Rockwood. My first suggestion is to try to locate the source of the leak and make at least a temporary repair. Keep in mind that water leaks can travel a distance before making it into your rig. The most likely culprit is a seam with missing or cracked caulking.
As for warranty coverage, from what I know you may be out of luck. Seam maintenance is up to the owner and is generally not covered in your warranty except for possibly the first 30-60 days. Some on the forum, including me, have had siding delamination which was repaired under warranty by FR.
I suggest that you take some digital photos of the damage and try to make a case for yourself. Again, you may have a very uphill battle.