I finally did it!!
I finally had some time to get the rocker arms done. I put a few together and tested the amount of actual rocking motion and of course, Not enough. I started the day re-cutting the slot by just a few thou. I might have gotten away with what I had but the pushrod length would have had to be exact so why fight it.
Then the counterbore was done. I had a club member regrind a #2 counter bore bit so the pilot was a few thou smaller than the tap drill instead of the clearance hole. I was able to then counter bore the bottom for a caphead screw.
Then all that was left was the tapping of the holes in the tail. Thru hole with 1/16 of material, what the heck. I used the "speed tap wrench" to get the job done.
After that I started to make the adjusting nuts but after 2 I didn't feel like doing them. I wanted to have some fun instead of the production line stuff that has been going on lately. I decided to make the air cleaner lid after looking at JPeter's V8. He has a cool air cleaner on his and I was thinking "I want one of those". So I spent the rest of the session watching the mill make me one.
Sorry about the crappy picture.