I've decided to change the skin to HR 559 UX-X. This aircraft has no surround to the fuselage roundel so this sidesteps the issue completely.
There's a few other differences between the schemes. The codes and ID bands appear to be blue rather than black on this aircraft and there is some dark tape on the tailplane/fuselage join. A careful examination of the UX-N photo seems to show the ID bands were present on the undersides of the wing and tail as well.
I've upped the shininess about 10% as well.
Not entirely sure the spinners would have been red in this theater, another source I have found shows them light blue.

