Forgive this simple question (I'm not a motorhead by any s stretch and am curoius) but wouldn't just idling the engine for a few minutes warm it up sufficiently to begin the break in process? How does the outside temperature affect the breaking in?
I'm assuming the plane is kept in a relatively warm garage, etc and the breaking in time would be outside where it is colder. I know you would need to adjust your needles some due to the change in air but wouldn't the engine warm up enough just by idling?