I'm assemblying a Hangar 9 Twist 40. I have procurred some long servo arms (1.25", I think) for use on the rudder and elevator servos. I have standard Futaba 3001 servos.

When do I need to be concerned that the servos don't have enough umph for the job. As they are set now, the servos will only travel from about the 4 o'clock to the 8 o'clock positions to provide maximum control surface deflection (set by ATV).

Should I bring the push-rods in on the servo arms so they rotate more?

What will be an indication that the servos aren't strong enough? Seems it will be difficult to determine when the plane is flying.

Thanks for any enlightenment.