Aparently the F4u-1 gunsight displays the gunsight backwards. What I mean is this. You have to use this gunsight:
![](http://www.arabian-knights.org/files/USNMk.VIIIflipped.bmp)
To get this to display correctly in the game:
![](http://www.arabian-knights.org/files/USNMk.VIII.bmp)
It seems to do it just for the f4u-1. The F4u-1d is ok. Was able to use the 2nd gunsight. Haven't tried the others.