Trying to convert weapon to armor piece

[Scharkey]

The thing is i'm trying to make my amber mace attached to hip as an accessory. I have a piece of equipment already existing in the game, and here's what i'm doing: i'm just duplicate armor piece (that is already existing in the nif) and then replacing it's NiTriShape data with the one from the amber mace nif. It looks alright in the NifScope, textures are showing up correctly, but when i'm equipping that modified accessory in game, the mace textures are stretching out all over the place. What am i missing? Please help!

Edited April 25 by Scharkey