Numbness in the hands can be due to lower neck and upper back issues. I forget the specifics. It took a while for me to get sustained improvements. There can also be inflammation where the ribs attach to the vertebra that can cause problems. Some of us have cervical ribs (false ribs) that make this worse. My chiro referred me to a Physical Therapist to help with the cervical ribs issues. Fortunately, I found an expert and she slowly was able to get results.

I don't understand what you mean. "I am a total Epley 'victim' and hoping to pinpoint the dx this week.
Seems I have one of those 1% presentations."

Did you try it and it did not work ?