The Iron Man mod is fine.
Notice how my skins react when they are hit by the Mystery. They turn black.
You were able to fix this problem with your textures in the Iron Man skin.
I would like to learn the method you use, BLAW, to edit your textures to use with the MUA Editor.
You can perfectly apply all the maps on the skins.
All your skins are perfect.
I use the Photoshop CS6.