I have frame issues behind the rear wheels also with my '07 fs 2500. Max WAS my contact until a few days ago. He told me they moved him and someone else would be contacting me. But 3 days after first talking to Max, They picked up my trailer in Dickinson, Texas (near Houston). That was May 28. If they go BK wonder what happens if your trailer is in their possession? SOL??? The driver that picked up my trailer told me that a BUNCH of fs2500's were headed back or were already there being repaired. All with the same problems, frame broken or bent at or behind rear wheels. I only used mine for mountain biking at first (no weight). but the first time I put 800 lbs behind the rear wheels, the siding popped off and the inside walls buckled. They knew this was too flimsy from the start. I don't think there could really be such a thing as a "half-ton towable toyhauler". Only if you don't put anything in it!! Max did also make me a bunch of promises on different repairs also. Hope it comes true. good luck to everyone dealing with this situation.
Kent