wildmanbaker wrote:
From the picture, that is the Ford frame that has failed, not an extension added by the Thor. I can't say for sure, but it looks like someone used a weight distributing hitch with this setup, that it was not designed for one. More than likely, the factory information packet also says to not use a weight distributing hitch either.
Take another look. There is clearly an extension slipped into the factory frame and welded. The extension failed right to the intersection of it and the factory frame. This one is on Thor.