Nice -
Can see maybe three errors (maybe a texture issue),
1) The NIVO on the undersides of the engine nacelles should come up level with the upper/lower camo demarcation on the wing leading edge.
2) The NIVO on the tail should start a lot further forward
If you look at the tail, NIVO curves down from the tail (fwd of the fin flash) to the fuselage just behind the 'W' of the sqn code.
3) Spinners should be NIVO not camo.
As for the mirroring, post it in the Bugs forum, there isn't supposed to be anymore mirroring used due to problems it causes.
The P51-D had a texture screwup on the leading edge when first released, I posted pics showing the problem, was fixed the next patch.