Hi Joseph,
I see you are a musician too, the mention of your shoulder pain and making more room for nerves makes me think of TOS = thoracic outlet syndrome.

Have you heard or read about that?

and a few starter info links- to compare any other symptoms- just in case =TOS isn't a well known condition either
TOS info:
http://www.nismat.org/ptcor/thoracic_outlet/
http://tos-syndrome.com/newpage12.htm
http://tos-syndrome.com
http://www.acofp.org/member_publications/thoracic.htm

we have a forum here also-
http://neurotalk.psychcentral.com/forumdisplay.php?f=24