@krisjb1 My physical therapist can just feel with her hands to see if my vertebrae are aligned. You have to lay on your back, so the muscles are on slack, and then it is possible to feel it if the lateral spineous processes are aligned. A good manual therapist can do this. Then if they figure out what muscles are too tight and pulling it out of alignment, these can be addressed. My PT does myofascial release to loosen the muscles and get it moving properly again. Here is our MFR discussion.

Neuropathy - "Myofascial Release Therapy (MFR) for treating compression and pain"
https://connect.mayoclinic.org/discussion/myofascial-release-therapy-mfr-for-treating-compression-and-pain/

You can search for provider at http://mfrtherapists.com/

I do think your experience and mine are very similar. I don't have deterioration at C2 through C4, but issues because of muscle spasms. If there is spine deterioration there, it can probably contribute to the issues. I have been helped a lot by my physical therapist and have learned a lot from her. You're welcome. I'm glad I could help.