Weapon Size for FemUndead

[Datareaper]

I have searched high and low for a way to change weapon scaling. Some of the methods I have found are Glitchy's MES program under the attachments section. However when I change the size of the 3 Unknown attachments (Weapon left, right and Shield respectively) and save the MPQ file, In game my Female undeads knee bones are missing.
The other ways look to be a little over my head with scripting and 3d model editing.

So does anyone know how to fix the problem with Glitchy's MES or know of another way to change the weapon scaling size for a character?