Careful about manufacturer's instructions ... I got the Super Tigre G90 and the manual is nonsense. They say run the engine rich for like 10 mins or so then start to do the lean rich thing for a tank or so. That is not the way for ringed engines. Ringed engines are best broken in with about 45-60 mins running rich. Just be careful ... ask around from reliable old timers who have been succesful in this hobby.

For me I will just run the engine rich for a few tanks (2-3) if its a 46 ABC/ABN. That is on the ground and then do not lean too much in the air for a few more tanks, after each flight slowly lean the engine up a bit more. What engine do you have?