Hey,
I made lately a weapon model for Skyrim which otherwise works well but it is always bloody. I have tried the blood lightning and FX with vanilla extra data, the extra data generated by NifUtilsSuite and with both. No affection. I do not know which causes this or how to fix it and only clue I have left is that the 3d indexes on the model are shown on CK to be a little different than in vanilla files I have compared it. (Bloodlightning 2, Blood FX 1 and weapon model 0 while in vanilla it's weapon 2, Bloodlightning 1 and Blood FX 0). I do not know if that's the reason behind the problem but I haven't found yet a way to change the 3d indexes to try it out. Any help with this issue would be welcome.