Run one tank on the ground then fly it. If it has a nice cowl please TAKE IT OFF. You can get easy access to the controls and the engine is well cooled.

IN FACT THE COOLING WHILE FLYING IS BETTER THAN GROUND RUNNING.

Avoid long periods of full throttle operation and land if the engine seems to be going "OFF" [ Hint the RPM will drop and the engine note will sound "hard".]