Would a shorter delivery stride help? Maybe a bit more pace in the run up and shorter delivery stride?
i also have a rotator cuff issue so I'm aiming for a quicker run up essentially and by concentrating on 'skipping' through the delivery stride will become shorter as the back leg cannot (in theory!) bend and straighten. I've tried shortening the delivery stride but this goes against my instinct. Changes against instinct require a lot of time which unfortunately I do not have, maybe at the end of this season.