Chris,

I actually use 90 lb leader wire for pull pull available at any good fishing dept store. you should also be able to get the feurls need to lock them also. You probably want to use about a 4 inch arm on the servo. I actually cross the leads and make an exit between the two servo ( rudder)bays in the rear of the fuselage. You will have pleanty of torque with the Seiko but the centering on return can be a little issue if you fly percision.

Al Young
JTEC/RADIOWAVE