yo Mike.
sorry for the delay
I haven't seen any more on this problem in the swap by Ben P that I posted previously.
All I know is that some people install HELP brand starter shims to move the starter further away from the flywheel, when where the starter fails to disengage
This is by powermaster;
If the starter pinion is being damaged, the gear meash is too sloppy. The pinion needs to be closer to the ring gear. If there are no shims installed, then material needs to be machined off of the mounting surface of the starter. Optionally, shim the outboard starter mounting bolt only. This will roll the starter towrd the ring gear, tightening its engagement.