I have a Kitfox 3 with Kitfox 4 wings. It has a rudder stop that limits the degrees of rudder (about 14 degrees off center line). At full rudder there is a gap between the elevator and rudder of about 6". There is an older fellow that stops by my plane and he has built a number of Kitfox planes over the years. He says my rudder should be coming within 2" pf the elevator. Considerably more rudder angle. I have gone through the builders papers and cannot find the recommended degrees of rudder. Is there a standard?