Locked Up (Genesis arms, that is)

I'm having some trouble with a Genesis figure - the upper arms / shoulders are nearly locked in place, with minimal range of movement. The rest of the body poses just fine, but the affected sections won't move more than a few degrees. I have tried zeroing the figure but nothing has worked. I really hope somebody can help because I have a fair amount of effort invested in setting up the specific morphs and really don't want to start all over again.
Thanks in advance! :)
Comments
I had this odd behavior happen to me. It turns out it was a hair model I had conformed to Genesis. Removed the hair and the problem went away. I don't recall what hair it was though..