Trouble adding body parts to custom models.

[IronhideLivesOn]

Hi all, I'm new to the forums here. My brother KelenStardragon's been a member for a while, and got me into modding.

 

Anyway, I'm trying to make a collection of modern "non-apocalyptic" clothing for Fallout 3 using Blender, and I've hit a bit of a stump. When I make clothes that don't require me to add exta body parts (for example, if I make a long-sleeved shirt that covers up all of the arms and neck and everything), it exports fine and works perfectly ingame. However, when I try to add body parts to the model (for example, if I make a T-shirt that requires me to add the arms from the character model), then it doesn't show up in game. Oddly enough, when I import it into geck, it shows up in the model viewer, but when I actually try to equip it ingame, nothing shows up, and my character just looks like a floating head. Is there some important step I'm missing when it comes to adding the body parts to a model?

 

Here's the settings I'm using for exporting models from blender:

 

http://i52.photobucket.com/albums/g23/Rashgaeroth/ExportSettings.png

 

I asked Kelen about it, but he doesn't know what the problem is or how to fix it. Some help here would be vastly appreciated.