7/16-20 or .050” per turn
I did just that, I talked with Mike yesterday, it was an extensive conversation but the highlights were that he recommended that I disassemble and clean the lifters. He said that the majority of lifter “failures” is dirt. And seeing that this is a fairly new build that it more likely to some small break in material that is causing the lifter “failure”. He also stated with these rockers that he doesn’t want to see more than 1-1 1/2 turns in total on the adjusters. Notice he said turns not threads showing. These are cup style adjusters not ball style. So bottom line is clean lifters, change oil and filter, prime the engine, bump it over, continue priming. Stoping and looking for lifters that loose prime rapidly and repeat. Unless there are any blatantly obvious offenders then run it.