I used high torque servos on the ailerons.

Standard servos on the rudders and elevator.

Since I used the stock mounting positions for the elevator, two servos provide more than enough torque.

The rudders are not used at high speeds so standard servos work fine.

The ailerons are a different story...

I have mine set for maximum deflection.

At high speed my Bobcat SQUEALS when I give it full ailerons, so it is getting a lot of pressure on the ailerons.