ORIGINAL: MinnFlyer
Re-check your CG. The problem you describe sounds like a classic case of either the plane is too heavy, or it's too nose heavy.
Hey Minn, If he has the Extra 300 I think he does, the flight charactoristics he describes is exactly what others have complained about that plane. It just stops flying unless your in the throttle with it. Probably to heavy because a 3D plane should be happy going slow.