What kind of Drs have you been seeing so far? {Drs of your own choosing or someone else chose them?}

What kinds of tests so far?
list of testing info - http://neurotalk.psychcentral.com/post580952-11.html
[5. Doppler tests are like sonograms of the arm to see if there are any blockages of blood flow. You can have neurogenic TOS and still have vascular / circulation type symptoms, but these may not show up on this test.]

Any comprehensive evaluation by an advanced PTs or expert chiropractors?
they spend more time on the study of the body/tissues/skeleton/alignment ect...than most MDs.

Sounds like something got yanked out of normal position and is now compressing the veins & or arteries for the arm.

did they do a MRI with arms up or out to show a possible blockage better?

Have you consulted {interviewed} some good work comp attys yet?
sometimes they may have a list of doctors..that can help prove a claim.

Sounds like a vascular Doc is needed for opinion/consult at the least.