I'm not worried at this point. The kid appears to have a very high IQ on the court. And I just bet that IQ is also present with him in everyday life.

From Draft Express (some of it might be older):
In the half court, Grant was not quite as good, but continued to finish at a solid 57% rate around the rim and was able to score in isolation and off screen situations at a nice clip thanks to his 40% conversion rate on jump shots.###
He did see an increase in his efficiency in jump shots off the dribble, as he improved his field goal percentage from 24.7% in 2011-12 to 32.8% in 2012-13 on these types of plays, but it's difficult to rely on this type of offense as a primary source of production. While he still has some work to do in this area, he saw an uptick in production due to a lower reliance on step back jumpers, allowing him to stay on balance as he pulls up for jump shots.
###
Also a solid outside shooter, Grant shows good mechanics on his jumper knocking down nearly two 3-pointers per game last season. At the moment he's significantly better in catch and shoot (36%) situations than he is off the dribble (25%), but he shows potential with both, something he can continue to harness to further solidify his pro prospects moving forward.
From DraftExpress.com http://www.draftexpress.com/#ixzz3rUbyUrzg
http://www.draftexpress.com
The guy can hit jump shots at a 40% clip. If he is open (and he often is now), there is no reason for him to not hit at a similar clip, if not more once he advances and gains in experience. He is a smart cat.
He is going to find a way because you just get the feeling that that is him. Remember, Gains suggested the kid. Gains is a scouting God.
The intuitive mind is a sacred gift and the rational mind is a faithful servant. We have created a society that honors the servant and has forgotten the gift. Albert Einstein