Yes, give Dr. Pardee a call. I think that most or all of the adjustment tools are on the west coast. I think because the original inventor lived in that area.
I had two adjustments done. My tinnitus came back, however. I think it happens during the sleep. I have sleep apnea too, and maybe when I go through an episode during the night my neckmuscles act up and I get out of alignment.
It did help my friend a lot. His vertigo disappeared and his back also got corrected. But his tinnitus is still there and bothering him a lot.