I'm 5 months into my PCS and have been debating the role of my neck in my symptoms as well. The nature of my injury (sprung up into dining table light from a leaning-forward position) makes me think that I may have messed my neck up. I have been doing some research and found that Atlas Orthogonal might be the best to try. It's not invasive like normal chiropractic work, no twisting or cracking, just gentle adjustments. I've been to a normal chiropractor that was recommended to me but didn't see any benefits after 2 sessions so I don't think I'm going back. I'll update how my Atlas Orthogonal session goes.