I noticed that the height of the face/head (from top of head to chin) in front view Down Tilt .. is greater than the one in front view horizontal 0 angle. The more I fix it to become equal the more it become inconsistent and disfigured, Then I remember that the other component attached to the sphere, which the extension (jaw line) to the chin is almost straight line. Consider that if you rotate the angle downward the top line will remain the same because the circle side is constant while the chin line will go lower than its previous level line. Am i correct? Comments are welcome. Thanks