If it has mild pinch after you put the flywheel on, just heat cycle it. If it has considerable pinch, blast about 4 tanks WOT at rich setting, then run it rich all day at least one day. Our last engine was getting almost 9 minutes on fuel, not too bad. Odonnell will get less. We run Sidewinder.
It comes with both buttons, and we run the turbo with OS P3 plug. If you are patient during break in, and keep the air filter clean, it will last forever.