Just purchased a 2009 sundance mk2900, my wife fell in love with floorplan and I thought I looked over the coach carefully. Well, I took it to a local rv repair center for a loose floor issue and during inspection, he found another major problem. The skylight over the shower had leaked and now the whole section of roof over the shower is gone. Its not leaking anymore, fixed by the dealer or previous owner, but I'm not sure what my rights are at this point. Bought as is, but I'm sure the dealer knew of this issue and didn't disclose. I haven't contacted them yet, but not sure if they will do anything since its used.Is this issue fixable? If so how major of a job are we talking, thanks.