Yep same here, 10Kb difference between reference and modified version. I'm not sure if that's posing a problem for me... yet. I'm going to change the _0 file as you advised and see what happens next. Thanks for the advice and response.
I am having a nub issue regarding character meshes. I changed the female character mesh to have slightly longer and puffier nipples. I got it to work flawlessly on my Breton character (She has max weight)... BUUUT a lot of the Female NPCs textures are wack. The body texture "explodes" and I can barely see around them much less the NPC itself. I now see that it is a weight slider issue. I MUST have the weight at 0 OR 100 and nothing between... which is the reason I noticed it first on NPCs. Is there something i must do to make the weight slider work correctly? Like do I need to change the nipples on femalebody_0.nif as well? I'll keep examining what I've done and see if I see anything out of place because I bet it's something I am missing in nifscope. P.S. I used MAX11 with Niftools 3.7.1 and nifscope for the import/export/editing of the mesh. Many thanks in advance