I'm no expert by any means, just a casual observer like most, though I've played plenty of pickup in my day But when I watch his shot, his form is fundamentally very sound. It looks like it should go in way more than it has. But too often it's a little flat and short. It certainly doesn't have anything to do with his strength and conditioning. It looks to me like his release point is a little too late. I think he's holding on to his shot just a fraction of a second too long, which tells me he's probably arm aiming. I know they go over their shooting forms in film sessions, he's making them in practice, but it's a lot harder to overcome the mental block in games.