if you get the required amount of rudder 'throw' out of it then all you need to do is ajust the rod closer to the center of the servo arm or vice 'a' versa (as noted above).. if you dont get enough throw out of it then you need to work on it more... its balsa wood man, the stuff is light weight.. when I first started building I ran into that problem too... and instead of wondering forever how to fix my 30 dollar airplane, I took a straight edge and laid it in the hinge line and folded the rudder over a little bit then switched sides and did the same thing... Doing that a few times on both sides should smash the light wood down enough to move more than you got now... TYhere are a number of things you can do to fix this problem, but one thing you DO NOT want to do is try and fly an airplane in a poor condition... who knows what might happen... the servo buzz at all?? That will drain the battery down faster (again, noted above) or if you have servos with plastic gears in them, you might strip a gear... I saw that happen once... that guy didnt land his 500 dollar plane that day [img]i/expressions/face-icon-small-happy.gif[/img]