I wish to endorse the view Chris stated on Scenar, as a Scenar therapist in Vic working most of my time on sports injury.
If you haven't tried Scenar have a look and judge for yourself
The link Chris has shown is very helpfull
Scenar Therapist Level 3
If you are in Pain ? then SCENAR Therapy may help you.
The alternative to Physiotherapist and Chiropractors
most a/c problems are easy to fix now. you need the distal end of your clavicle adjusted superior to inferior w/ an arthrostim (chiropractors use them) and rehab it w/ exercise tubing. step on one end, bring the other over your shoulder (pulling the end of the clavicle down)(also put a thick towel under to keep from sliding and hold the back tube w/ the opposite hand ) , hold the handle in your hand and do motions in all directions w/ very little movement. this isometric exercise w/ the bones in place will stabilize it