I have, sort of, asked this question before but need some more advice.

I bought a couple of Futaba 9151 digital servos for a project but for some reason did not use them.

I couldn't return them so had two expensive servos sitting idle. I have now installed them in the rudders of my Kangaroo.

My questions are;

Does anyone have experience with these servos in a jet?
Do you think they will be OK in my rudders?
Will the normal servo horns be strong enough?

I am a little concerned as they were apparantly designed for 12lb F3A aircraft. The specs are very good but they have a plastic gear train.

Speed: 0.19 sec/60° @ 4.8V
Torque: 132 oz/in (9.5 kg/cm) @ 4.8V

Your thoughts would be greatly appreciated.