Different technique to some degree? What you described in your other post is more along the lines of what a person would do with a ringed engine. It's not appropriate for an ABC-type. Thankfully, most of these engines are fairly durable. ABC-type engines are very, very easy to break in if a person keeps their general operating principles in mind. Think through how they work, and one method for breaking them in makes much more sense than others. This plays out in practice, too.

In truth it doesn't have to be very precise. Get it up to temp and let it run. Run one through, then fly it a bit rich. That's really all a person has to do. Anything more is personal preference.