Just so everyone knows. The issues with the frames of the fs2500 has almost nothing to do with weight, unless it is the tongue that needs fixin. The bending and breaking behind the rear axles is due to the lack of cross bracing from bottom of c-channal to cross members. this results in when a trailer is turning and the rear axles starts to cut, the leaf hangers are welded to the bottom of the c-channel, the the frame starts to tweak because there is no bracing. The fix from the factory clearly shows no signs of weight reinforcement but lateral reinforcement. I hope I explained that well enough. If you look and any other trailer frame you can clearly see that this was one thing was over looked in the manufacturing.
If you have questions on the fix from my fs2500 just let me know.