I can understand the chronic part that your describing.
I had been to many chiropractors for many years till I got to where I was going to a chiropractic college and letting the students do the adjusting just because I was so sick of spending a lot of money continuously.
It would be better when I would leave and then in a couple of days it would be back to where it was before.
And the adjustments were always the same spots.
I was very lucky, someone told me to try out this new guy in town.
He happen to be the developer of a specific technique which he developed over a number of years.
Long story short over a period of time he completely fixed my back to where I didn't need chiropractors anymore.
The technique he developed is called "ABC technique" or short for "Advanced Biostructural Correction"
He only now teaches his technique to other chiropractors and its hard to find someone who delivers his his technique.
But if you can find someone who does it good, there isn't anything else like it.
You could try doing a Google search on it.