When was the last time you broke in a weed eater or a chainsaw? I have seen a lot of hype about this and what I do is put it in the plane and fly it. What helps seat a ring is heat cycles, heat it up for a flight, then let it cool off and do it again. I also hear some people say when it breaks in it will swing a certain prop, if it wont swing a prop now, it wont swing it later. Arter a ring is seated you are not going to realize a thousand RPM increase,a couple hundred at best. I do beleive in putting enough engine in a plane so I dont have to have it wound up ALL the time, Just take it 50 to 75% the first 4 flights and then have some fun.