RE: 1.20 Edge Review, the beginnings
I give all my conventional ring 2 stroke motors a very healthy rich break in. (This included a ST2300) I don't let them lean out in the air until I have a couple of gallons thru them. I have had very good luck this way, although it is most likely overkill. ABC's are different. Again this is just my opinion.
So far I have never seen break in instructions for a conventional ring motor that did not include a rich break in.