Never experienced this one, one servo on an aileron goes down fine but when it goes up it flutters like mad sort of "machine gun style" never seen anything like that before?
It´s a nylon gear servo, so what says you all, a nylon cog has slipped out? or teeth are broken? is it ready for the garbage? it was a cheapo. Thanks.
Never give up on something you can´t go a day without thinking about!