I am following the calibration steps in the manual, but have been unsuccessful.  The first calibration I performed, the red calibration circle appeared concentric with the green circle on all 3 aircraft, but the green circle was smaller.  I then used Control + 9 and then ctrl + 0 but the green circle never changed size.  I tried doing that while the red circle was still showing and again after it disappeared, no joy.
I uninstalled Weapons and reinstalled it to deal with a different problem, but now when I open the HUD and try to Calibrate, the red circle is displaced from the center of the green circle.

Has anyone else had these problems or can you tell me what I'm doing wrong?