Originally Posted by Chad Millikan

First step is to zero the trim on the radio before you put the Servo horn on, and find a spline that is closest to 90 degrees. Then use trim step to get it to where the Servo is at dead 90deg. Then use the turnbuckles to get the wheels to zero toe. An easy way to do this is turn on your radio and car and push the car against a smooth flat wall and use your camber gauge to check your toe.
Actual first step should be get an aluminum Servo horn.