I just installed this into my 4.12.2 modact 5.3 game. Lovely! Previously I've been enduring the Hurri 'pit frankenthing.
After the first couple of test flights, I naturally got down to fixing the more bothersome elements.

- The rear ring sight has been raised a bit so as to better align with the front post bead and the bullet stream.
- The CAMERAAIM (SHF-F1) position has been aligned accordingly.
Now you can rely on the sight!
- The front glass pane has been separated from the sidelights and treated differently. It no longer produces specular glare from the Sun. This is because such a tilted pane could only produce such glare if the floor of the plane was transparent!
- All glass uses a different texture, and the surface normals for all vertices have been reversed so as to emphasize the greater efficiency of forward scattering by schmutz.
- The compass disk has been lowered by 1cm, to improve readability through the gauge's window.
- For 4.12 players using head tracking gear, I've added to the 4.10 cockpit class the 6DoF control code, increasing notably the range of head movement in the forward and up/down directions.
Remaining to tackle... The annoying spasm the waypoint indicator ring on the compass goes through when the azimuth to the waypoint passes through 270 degrees. This is a longstanding and perennial problem for many compass-related gauges, due to the code employed for them in numerous cockpit classes. Others use a different calculation to avoid this; which is what I want to employ here.
Quickly looking over the damage code in the plane class, I see a suspicious-looking issue with the oil damage, which I'll scrutinize more closely. And the rest, too.