And, above all, don't be afraid to go full throttle with the break-in process with that extra rich setting. It should be blubbery rich and go to full throttle and held there for a while (see manual), then leaned out for about 10 seconds, back to idle for a minute to cool down, then back to full throttle and blubber rich.

Some people baby the engines and don't take them to full throttle during break in. That does not allow the engines to "seat in" properly at full throttle thus the overall performance after break-in may suffer.

CGr.