I'm hopeing some experienced flyer's out there can help me solve my engine problem. I have a Hanger 9 twist with an OS 46 on it. Spinning a 10X6 prop. My problem is the engine dies during take off. I test run it before each flight opening it all the way and everything works fine. But on take off as I advance the throttle it dies about half way. This just started this evening. I had two really great fights with it then I couldn't get it up in the are again. This is a new engine with lest than 10 flights on it. I had two other guys tune it at the field two weeks ago and it seemed to have the same problem but it wouldn't die during take off.
What can I do to correct this?

Thanks for any help you can offer.