Skin textures for a custom race

[eyeballjones]

I downloaded BHUNP  along with it's ygnord custom race but I noticed through some testing of moving texture files around that it appeared to be using the femalehead_sk.dds from the regular female textures path. This has caused a neck seam if I'm using separate textures for npcs and the custom race. 

 

Is there a way to fix this if this is the case or is there another reason that when I do do separate textures for npcs and the ygnord that it causes a neck seam?