ActionDan what are you doing for shoulder rehab? Get some Therabands from a physio and maybe a lacrosse ball for "deep tissue massage", light dumbbells also work, for doing "lucky cats" (external shoulder rotations / rotator cuff exercise). Attach the theraband to a door handle or table leg and practise retracting your scapula then drawing your elbow back, keeping it close to the body... these are the sorts of things my physio got me doing after I damaged mine.