Greg,
the stock rudder control horn is pretty simple. Just like an aileron torque rod. The rod sticks out (the right side usually) at the hinge line underneath the stab. You then just run a pushrod to it. This, of course, if you built the rudder per Jim's plans. If you have a full height rudder, then it's a non issue.
I guess a picture would help.
Glad to hear that I'm not the only one with stab issues...

I left mine to set while I went to pick up my son at school - wrong! Oh, it's bang on alright - just a bit canted down on one side...

I got discouraged and let it ice for a while. I guess it's been a year now. [:-]
David.