There is a small pin that allows the shifter ball joint to pivot.
You can see it in the picture here on the left:

So this pin is worn out and out of round as well as being very loose in its "socket".
It would be a little difficult to replace for the average DIY-er as the bracket that holds it in is brazed in place.

Has anyone replaced this pin?
I am guessing a welded "bung" and a threaded pin with backup nut would solve the problem.
Also in the pic, see the "dimple" in the hole for the shifter on the right?
Is that supposed to be there, or did this one get dropped?
Stu