I didn't have a frame failure so much as too much flex. I have W&P 44RLS and there was enough flex in the frame that it kept seperating the wall in between the garage and living. Work and Play battled with Lippert for a while to get them to do something to take care of this and they finally came to the dealer and put a support tube in between the frame rails in front and behind the axles and added some outrigger type supports on the outside of the frame rails.We will see what that does. You would think a frame mfg. would know that for that long of a trailer the frame might need some reinforcements.