[Justin Stiltner]

You might want to think of it this way, output the data to the servo just like you do with a speed controller, ie if you want to center it send 127, full reverse 0 and full foward is 255. however insted of full foward and reverse you would have fully clockwise and fully counter clockwise. As somebody else suggested, map the data from an joystick to the servo output and print the data to your laptop and you will see what we are talking about.