Agree completely with Ramair. Exhaust all non-out-of-pocket avenues first, even if it takes a few days/weeks. The situation you describe as "like taking off in a plane" is worrisome, in that it does sound like a WD hitch that's not properly set up. I assume you mean the front of your tow vehicle feels like it has limited ground contact. Many factors come into play here; tongue weight, overall loaded trailer weight, cargo in your tow vehicle, hitch adjustment, type of vehicle you tow with, etc. etc.
However . . . if the axles are bent, that's going to cost someone some coin. I'd start with my dealer, even if your confidence is low, and establish contact with Forest River via their resources. FR may well head you in their direction anyway, so see what you can accomplish by starting with them.
We wish you success!!