Hi -
The TOS forum has info on MPS or CMPS "chronic" in our useful stickys and some of the same self helps and therapies will be helpful too.
http://neurotalk.psychcentral.com/showthread.php?t=84

the info links about- triggerpoint, massage, US, LLLT, INF stim should all be useful for you.
Possibly even chiropractic and bodywork therapies.

We get TRPs and spasms and achy muscles often with TOS.