Okay, let me try another tack.
A normal map, which is not the default map, would have to be generated for each skin impacted by the lack of a normal map, or one that does not match the skin. Theoretically, the default normal map should fit all skins for each plane, but, that does not appear to be the case.
Now, who has a complete list of skins which the normal map does not fit the skin? I don't. Until I do, which is going to require a skin review of every skin in the game, then we cannot do anything.
I am not going to blindly create a normal map for every skin in the game which may or may not need it.
Pretty sure the "chrome" look would be the fault of the specular map, but, again, I need to review the skins to see what is going on.