Because? That seems very odd
Sorry John, I did not respond to your post before now, as I had gone off elsewhere, fortunately others jumped in .....
One Morganeer I know of who covered considerably more miles than most seem ever likely to, used to just have the wings repainted...I suspect that as his wings were a different colour from the body would have masked any shading difference.
My old Mog presently wears it`s...err... patina with pride... (-:
