First of all, sorry for my english.
I'm noob at modding, but managed to replace meshes and textures of armors. But then I can't replace helmet. For example, I tried to change nordplate helmet with helmets from other mods - not happening, my head just missing. I can preview helmets in CK, even with textures, but not in the game. I even tried to replace with one from "Dawnguard Light Helmet Replacer" by Yamanotaka, same result. Again, I managed to replace cuirass, gauntlets and boots. What do you think guys?