Move the camera incl. support pipe and lens motors back and forth until the tilt axis stops exactly in a horizontal position.
To adjust the height of center of gravity, it is advisable to bring the camera into a vertical position, first.
Now, secure the camera with one hand and open the blue clamp lever with the other hand. Now, move the dovetail guide until the height of center of gravity conforms to the axis.
From time to time, keep moving the camera in an angle of about 45°.
If the camera remains in this position the adjustment procedure is complete