JBarca wrote:
I have not yet figured out if the DC addition to the WD hitch created all this frame issue. Not that anyone is yet pointing to the DC to aggravate this frame bend at the snap up issue, just I myself have not connected those dots yet.
I believe the DC contributes to the forces attempting bend in the face of the frame.
We agree there's considerable force at the bottom of the snap up. And I think we agree that it gets worse if anything goes south (snap up bends, frame bends, etc.)
In addition, I think there's a rotational force on the dual cam mount where it wants to rotate into the face of the frame. Those self tapping screws in thin sheet metal aren't much of a deterrent.
This photo from the pinch bolt shows some evidence of that rotation:

I'm pretty sure the dual cam frame bracket rotates a little as soon as a load it applied, so some rotational force is always there, it's just a matter of how much.
If my analysis is correct, then the dual cam design is "doubling down" on trying to bend the frame vs just using weight distribution with snap up bars.