Have you already tried various types of PT, chiropractic & bodywork before considering surgical interventions..?

I'm just asking because even with an skilled TOS doc, recovery isn't always 100%.
From your symptoms I'm guessing you have more NTOS (nerve) and not VTOS (vascular)?

Did something specific show up on xrays/MRI or other testing?
- like extra cervical rib, large bone/ligaments, other anomalies?

Was your TOS caused by an injury of some sort ( car accident /sports etc), repetitive/work related or some other?