My question now is what is wearing down to require this? The linkage is fine and I replaced the starter switch thinking it was worn.
There might be some adjustability in the positioning of the starter pedal linkage where it bolts to the bell housing. Maybe moving those forward or backward as far as the hole will allow. Also, there may be some wear in those bolt-on brackets, or maybe the pivot point for the lever on the starter itself is worn.
Just throwing out some ideas.