have had vmar plane and 46 engine for few weeks the plane and engine looked great and had hope to fly two weeks ago. the wind has been to high here on the flying days. cranked up engin on tuesday of this week soommething broke in engine. drichmond said ask what fuel i was using and i told 10% cool power they told me that i could not usy synetic in this engine. is ther outher fuels to use plan on sending back to richmond to see if they can repair cheap put 46 from nexstar in v mar plane ffor sunday flying