True, true, true!!! We used to break in the .46 FX by gassing them up and running it in until it would keep running then fly the plane doing a lot of vertical up and down lines just to heat them up and cool them down. Three tanks and that was about it. Today I follow the instructions no mater of brand, well, the SKs are another story. By the third tank the engine should be in fine tune and running well then just require use. They do get better with use and you will notice a difference but it isn't earth shaking. Being a gas hog is usually just the engine being run too rich. I even figure one ounce per minute with a trainer when I'm installing a tank and there is always plenty of fuel left after a flight.