Finally got an engine I can trust. After 2 TH.46 I got my money back. Then I got a Magnum XLS .46. What an engine to me this engine seems to have more power. Of course I dont have a tach, but anyway. I cranked it and did the thirty minute break in and then I flew. Never deadsticked or slowed down. Very happy with my Magnum. I recommend every one get rid of that TH .46. Happy flying.