there is no reference that says you need to go through the OS break in procedure in the planes manual only that the engine should be run on the rich side for the first few flights to fully break the engine in. to do a full OS break in procedure you would need to remove the limiter and follow the steps outlined in the OS manual which involves running in the engine alternating between rich and lean runs at full throttle using the needle to change the fuel mixture at no time does the manual refer to this as being necessary.