I to k my heli to a Hobby shop in a town near me. The owner has been flying competitively for 17 years. My local shop is more concerned with planes and cars. This guy knows his stuff. I had him fly it a bit in the store and he told me what my problem is....ME. I just need more practice. He trimmed it up a bit and hovered it rock solid. None of the yo-yo stuff I have been dealing with. So the only explanation is that I need more experience flying. I also just deactivated the detents in the throttle stick, he said that would help immensely.