Have you seen this page-
http://tos-syndrome.com/newpage12.htm

Do any of the other VERTEBRAL ARTERY symptoms fit for you?

I had many of those but after the worst of my neck/shoulder pain was resolved from PT & chiro they faded away.
My voice is still not as strong as it used to be - I used to be able to sing without my voice cracking

DIPLOPIA, - double vision
DYSARTHRIA, weakness or incoordination of the speech muscles. Speech is slow, weak, imprecise or uncoordinated. ...
DYSPHONIA, voice changes, hoarseness or other phonation disorders
DYSPHAGIA- i think this is trouble swallowing