At one time I cleaned up a lot of meshes, mostly hanger pieces, but am a little rusty on it now I'm afraid. A few points off the top of my head: - using Blender 2.49b - selecting Fallout when exporting to nif - having everything on one layer and making sure it's all selected before exporting - being very careful not to delete collision meshes when fixing the object meshes (they have a big circle around them I think) If you post a specific mesh name I could refresh my memory then walk you through it. Good luck.