Jstang50,

Check the gears on the outer and inner shaft and make sure you don't have any teeth that are messed upped. You'll have to remove the canopy and the rear body to check it correctly. If that looks good. Then you probably have a bad motor.. It you have 20 or more hours on the heli, I'd sugguest replacing both motors at the same time. I replaced both motors on my CX awhile back and it was like buying a new heli. It was so quiet and responsive. Also, if it seems like you have less flight time, get new motors, they are only 10 bucks each..

Hope this helps,

Dave / Choppersrule