Maybe I did not explain myself correctly (language barrier here)
I mean that in all AH airplanes, except the Spits (all versions), the pilot head can be moved forward to almost touching the instrument panel.
This is not possible in Spits.... I suspect that the COPY & PASTE was precisely what HTC designers did.. very same bug in two completely different versions of the game.
Maybe is not important to somebody, but it is very annoying to me, unless somebody comes with a system in which the size of the gunsight remains constant (with the right proportions) regarding the position of the head of the pilot, as in real life.
Shooting in air combat is of the most importance.
This is the RIGHT perspective for the P-51D in AH2 (K-14 gunsight with a 50 mils inner circle and 100 mils outer circle here) and a F6F-5 with Mk.8 gunsight, possible from almost all fighters, but impossible to get in the Spits:

