On the upside it looks like i got the pushrods correct.. bout 1.5-2 threads on the adjuster.. will just need to figure how many thought 1 turn is so i can lash (hydraulic)
Likely 20 threads per inch, so one full turn would be .050.
Could also be 24 tpi,so .042 per one full turn.
To tune up my rocker stands, I used some 80 grit, and 240 grit sandpaper (or emery cloth) glued to a pane of glass (flat!). Roll in circles, remove metal slowly on the 80, cleanup with 240.
Time consuming and tiresome? You bet. Necessary if you want them right, and almost free. (Used the same setup to true up holley metering blocks and bodies.)
