This problem started recently I believe...
The center of the NVG circle, the HMD cross on the Hornet, and Petrovich's interface "crosshair" on the Hind are all displaying 20 degrees or so above the center of the VR view.
In this image, I am looking at the center of the HUD glass (you can see that's centered vertically in the VR view) The Petrovich crosshair is above.
In the Huey image, I have marked with a red cross where I am looking. The NVG circle is centered above.
The same effect happens with the Hornet HMD (and NVG) but taking a screenshot doesn't show the HMD, I imagine because it's rendered in only one eye.