Some videos on actual Upper cervical adjusting -
https://www.youtube.com/watch?v=G9fGT-gaxzA

no twisting needed..

Possibly some of your kinks or misalignments could be from birth or some anomaly..
but I would try a skilled upper cervical a few times and see if anything improves.. don't sign up for a set plan or time frame.
Each case is different. Upper cervical alone - may not be what you need. Some of the practitioners only do upper cervical and nothing else.. I feel that is a mistake by those practitioners.

My chiro used a drop table and leg length checks for the c1 c2, he also did gentle /careful standard adjustments and used other modalities for soft tissue treatment.
I do feel he was one of the highly skilled healer types..multi talented..