@LadyLaura418, We have a lot of overlap in our symptoms and I've made some progress, so I thought I'd comment:

The #1 thing that helped me was elevating the arm on the symptomatic for the purpose of lifting up the collar bone/shoulder girdle in order to open up the space underneath it, to reduce compression.

In other words, if TOS involves compression under the clavicle, then raise the clavicle. I found out later from literature than some people were already doing this as part of testing for TOS. I used it for relief. :-)

I do this elevation when watching TV, reading and driving (it's my left arm so I just prop it on the door). When I walk, I don't let the arm hang down, but prop it on a hip, a top of a pocket or in a pocket. When working at the computer, I have books on the left side so I can prop it periodically.

The huge reduction in symptoms was further confirmation that I had TOS.

Here are other things that helped:

http://neurotalk.psychcentral.com/post802248-72.html

Good luck.