Help Changing Weapon Holstered Position

[Jygalag]

I recently created a weapon for NV (http://www.nexusmods.com/newvegas/mods/56308/?) and one of the only big problems is the position on the player's back. As it is bulpup it sticks over the shoulder way too much. I am very familiar with nifs but fear this issue is only fixed by editing character skeletons. Any help is appreciated to reposition weapons on the player's back. Thanks!