Illidan-Blades on the Back!

Hello friends, since 24 Weeks i wait for the offhand.... it still does not drop... so i want for me a second blade...

I change the model into the offhand, BUT the weapon is still at the site, not on the back like the other sword....

need some help pls!!!!

greets

does nobody know this? :(

ther's a *.dbc file (sorry, I don't know the name by heart) which defines the weapon placement.