ICE_MAN,

Be more specific on where you have your clevises. Having them on the outermost hole on the control horn(on the control surface itself) and the innermost hole on the SERVO arm will produce the least amount of throw. Innermost hole on the control surface, and outermost hole on the servo arm gives the most throw. I'd caution against using the inner-most hole on the control surface, as the pushrod geometry can get weird, and sometimes cause binding. You might want to think about picking up some long servo arms, put the pushrod in the outermost hole, and put the control surface clevis one hole from the furthest out. I've got mine setup this way and have about 80 degrees of elevator movement, as much rudder as I can get without hitting the elevator, and about 60-70 degrees of aileron throw(on high rates, of course).