BarneyS wrote:
The L brackets have nothing to do wit it. All the bars do is slide back and forth on them. They do not limit the rotation of the bar sockets in any way.
The problem being discussed is the bar sockets hitting the ball stem/shank because it is too long and extends down below the upper surface of the sockets. Those sockets rotate when you make a turn and can crash into ball shank causing the socket to break or crack. You can easily see that happening in the photo earlier on this page.
If your ball shank extends down below the top of the socket, i would strongly advise you to change to the proper ball or you will likely end up like the OP with a broken hitch
Barney
yes, I plan to change it. Still not sure how socket can rotate far when the L bracket limits the horizontal movement of bar. I believe you when you say it does, it must pivot on L bracket.