The for the fix comes from badgator over on peach parts but he did not give details nor pics. I am supplying pictures. Also I picked the PVC part that was available at my Hardware Store and I don't know what badgator used.
"I used a pvc pipe fitting I had in the garage, using the metal bracket outside, ID worked, OD had hex? to hold in center, cut off to fit length, probably cost .69 cents.
All it has to do is center the throttle shaft in the bracket and not bind."
The exterior rubber part on mine was OK it was the Plastic Ball that was falling apart. So that is the part that is fixed.
I like benzworld.org way of posting pictures better so I posted there first.
https://www.benzworld.org/threads/fix-a-fire-wall-throttle-linkage-pivot-bushing-84-300d.3066778/