I have always read that the Eng was kept on at full power because there had about 5 to 10 incidents where small amounts of fuel had been left in the chambers because the pilot was messing with the throttle and IT DIDN"T CAUSE THE PLANE TO EXPLODE, but it had stirred up the fuel while landing on the runway and had ended up pushing the plane into the ditch or flipping it over multiple times while it was trying to stop. so it was sugested that during flight the plane never be taken off full throttle.