trouble with new custom weapon

[Nikolei]

I made a model and texture of an M4 rifle and implemented it in the udk successfully. now I try to implement hands, so I have 2 materials: one for the rifle and one for the hands. here you can see that the material of the rifle is assigned to some polygons of the hand, although it looks correctly in 3ds max. some polys also seem to have the default texture. I dont know how to seperate these polygons in the udk so I can assign a different texture to them.
someone have an idea?

[ilguano]

Have you exported your model saving UVs? Could you show screens of your export and import settings?

[Nikolei]

I dont find there any option to save UVs. here is a screenshot.

[Nikolei]

I found out about these UV channels, and now it works.