oh, you mean the servo arm. that is what I call it. The arm that screws onto the servo. I already did what you said. I first put the car on with the horn off and I have my steering trim set at 0 or nuetral (straight ahead.) made sure the wheels were straight and then put the horn on and adjusted from there but I did not have to adjust. It was perfect and the wheels were straight. Any idea on the holes on the steering plate.