krossk, the rudder/vertical stab is a very weak point on the tiger 60.the vertical stab is so tall.if you add to the rudder i think i would beef up that area some maybe add some gussets or something.i have seen one other tiger 60 at my field snap the vertical stab due to stress and several others flex a lot at the vertical stabilizer.someone found and article to reinforce it by adding triangle stock between the vertical and horizontal stabilizers.that helped a lot with mine.