Dan , let's start with how much throw. You plane should have a recomondation on the plans
or in the instruction book. If you can get enough throw without it binding leave it. But , keep in mind the
nose gear also runs off the same servo. To keep enough travel to steer you should start trying to reduce
it mechanically. That is by moving your linkedge.Start on the servo by moving inward. Then go to the control
horn and move out. If that dosn't fix it go into your radio programing. And remember that you can increase
your stearing by moving the linkedge the oposite way you reduced the rudder. The throw is always
measured at the biggest part of the surface. If you cant get the enough throw then worry about triming the
front of the rudder or back of the fin. I think it would be best to unhook the clevis from the rudder control horn
and then move it with your hand to see if there is enough throw. If there is then do what I said at the top
of this answer. I mesure the throw with a triange on the rudder. Just push the rudder till it starts to bind.
stand up the triange were it touches the rudder, then center the rudder and mesure the gap between the
triangle and the rudder.
I hope I have answered all your questions, if not post back.
later daveo