My three on the tree was pretty sloppy so I measured the transmission shift fork rod gap at .110. Best fitting washer was .08 or so. To fill the remaining space after the cotter pin was installed  I wrapped some copper wire in there to take up the space. I haven’t tried this yet but got to thinking about threading the rod ends for a lock nut and washer so I could snug up the slop.
Any thoughts on my idea.
thanks,
Richard

Not sure what you have.  Is it a pivot consisting of a rod end at a 90* working in a hole of a steel shift lever that has become washed out?  If so, you could find or fabricate a bushing that would slide on to the rod end and drill oversize the hole in the shift lever for the fabricated bushing.  

64F100 57FAIRLANE500

This is on a T85 transmission shift leavers.
The slope is back and forth not side to side

If the levers are worn you can get new ones. I bought a set from Carpenters for mine.

Durham Missouri