Material mismatch

I'm skinning the ARAK M70 to match my skin and I encountered a problem:

If I edit description .lua and declare the arak diffuse to force loading custom skin for the weapon, the glass of aircraft is black.

I've discovered that the same material naming is used for the glass of the AJS-37 model and for the texture of the ARAK:

    
{"Material #713", 0, "f4u_glass", true};
{"Material #713", 2, "fg-1d_glass_specular2", true};

{"Material #713", 0, "arak m70b_diffuse", true};
{"Material #713", 1, "arak m70b_normal", true};

Could you rename the ARAK material and fix it?