I had a problem with my TT frame several years ago. It was bad. We contacted our dealer who contacted Keystone who contacted Lippert. Long story short, Lippert sent a crew to the camper (which was not at my house), fixed it, and didn't cost a cent, other than paint to repaint part of the frame.
Before jumping in, ordering parts, and demanding repayment, contact them and state the problem and give them a chance to respond. If you jump in and attempt the repair yourself, they may deny you. They may also provide a repair crew to come out to your camper and do the repair, right there. But if you jump in and start dismantling and replacing, and then demanding resolution, they may turn a deaf ear to you, as they now cannot validate what the original situation looked like.
Doing it yourself, if you've already started, you might as well finish now, and take your losses. Sorry!
