I have a new FP40 OS engine.The engine runs great it idle great on the ground has great power run great in the air .But when I go to land the plane and idel back and on final the engine quits and i have to dead stick it in . Some of the guy at the field says that i just need to run it more to break it in .I've ran it on a test stand for 3.5 tanks of fuel 2630cc {about1/2 a gallon } How much more or how to fix it.