Another option is to make a "y" rod by attatching another short pushrod to the rudder pushrod and using a bell crank or making one out of the tail wheel rod. This keeps all the stress from steering and rough landings away from the rudder and hinges. Very similar to the pics phatbob had, but instead of attaching to a servo, you run the pushrod up into the fuse and attatch to the rudder pushrod. Doesn't look as neat as attatching to the rudder, but saves U from using another servo.