I probably would have run a strap of steel (perhaps a box-box wrench the right length?) over the end of the shaft and used a bolt through the pivot and adjuster ears to apply pressure while tapping and heating.
Or just beating on the wrench handle, with pressure applied. 🙄
But I'm the kinda guy that gets resourceful with whatever is at hand, and I don't have much left, at this point...
Jim,
Lil'Red is a '87 F250 HD, 4.10's, 1356 4x4, Zf-5, 3G, PMGR, Saginaw PS, desmogged with a Holley 80508 and Performer intake.
Too much other stuff to mention.