Does it affect anything if a servo has enough slop to make a little tick noise when the control arm is wiggled? How will a stripped servo act in flight?
If the little tick noise is a nylon gear slippng you better open up the servo case and check it.
As to how it would fly with a stripped gear, let me ask you a question. If the steering gear in your car was stripped about the center - in other words it would only turn the wheels at the extreme end of the steering - could you keep the car going straight down the road?
John