Well, we tried taking apart the servo for any loose wires it is solid. The twitching seems to be getting worse. Has anyone had problems with this combination ( 9253/ 502)? The twitch is a side to side movement, While it was hovered we were able to get close enough to the side to see the servo was actually jumping as much as a 1/4" in both directions. The twitching starts as the heli gets light on its gear before it actually lifts off, and continues at a sporadic rate until it is back on the ground again.