Bronze distributor shaft gear wear
Might have been a tight bushing, I do recall when I put the dist in before starting it the first time the gear slot was not aimed to cyl #1 and I was able to easily turn it out with a screwdriver and when I tried to reposition it and missed, it would not come back out. Almost like it was too low even then.
I’ll check the bushing, maybe put a new one in but I’ll need to get the tool to burnish it.