Just finished commenting on my earlier post about my snap up problem. Thought I'd throw in a comment about your last post.
I have read other posts before that say "when in a turn all the WD lift is applied to one snap up" and I politely disagree! The bars have two almost equal bends, and when one is going forward, the other is moving back and has to be applying an almost equal force to its snap up. I would bet that if there were a method of measuring that force, the 2 would be very close.
Just another thought, if there weren't a space on the inside between the snap up and the frame, I believe that there would be almost no occurrences of bent snap ups and frames, with the possible exception of bar to head or bar to cam arm jamming. Maybe Cequent should make a different snap up for the common frame width on today's trailers, or some sort of filler to spread the load.
I never had any interference with the ball mount, or the cam arms on my old round bar assy like the trunnion type seem to have somewhat regularly. My coupler is bottom mounted, and there is mucho clearance. That is one reason I am leaning toward the new bar paint against a rough cam (and probably not the same wear area) causing the excessive forces when the snapping or banging occurred.
Again, just thinking and mumbling!!
Have a great week!
Gerry