"I've not had the occasion to check if the rocker arm ratio comes into play or not on an assembled engine, but my feeling is that the ratio will have an effect on the preload.
If that's the case, the preload would be 0.625" per full turn, or 0.312" for 1/2 turn." by Cobalt
I stand corrected. I didn't think about the rocker arm coming into play. My bad. I used to know that, but I'm not as young as I used to be. I'll try to keep that in mind.