So finished the first three ART (Active Release Technique) sessions for the shoulder. The range of motion is fine, and everything works fine.
Two main problems though: bicipital tendonitis, and likely an impingement too.
I'll keep a diary to see what seems to work and what doesn't. Thing is, I did a ton of rotator cuff things and they didn't get rid of the impingement, but the bicipital tendonitis did nearly go away last time.
So some pressure must have been off it.
I'll pay more attention to scapular issues, including a regimen of face pulls as well as some pushup work, i.e. the "unstable" pushup like rings, on an exercise ball, etc.