I've been working on a hdt horse replacer and have encountered a problem getting the alpha to work on the tail/mane. I've copied the BSLightingShaderProperty & NiAlphaProperty straight from the vanilla horse.nif and made sure the UV maps are exactly the same, but for some strange reason, the transparency only works on certain areas of the mesh. Here's the replacer nif and the original: Dropbox Link You can see that the very tip of the tail and the right side of the mane do have transparency, but the rest of the mesh doesn't. I know the vertex count on the tail/mane mesh is off by 4, I even created the nif again with fixed vertices so that they were exactly the same, and I still had the exact same problem. Here's a screenshot of the two meshes with exactly the same number of vertices: Pic All I did was move around the vertices, this shouldn't affect the texturing at all. Even on the tail, where I haven't touched the vertices at all, the problem is just as bad. What is going on here?!