What I've noticed, and it seemed to have started at the Nebraska game, was that Kofi will have a single man on him when he gets the ball, and the second he puts the ball to the floor to dribble, THEN he gets the double (or triple) team. The defenders will guard the perimeter to stop Plummer and Frazier and Grandison from getting the open 3 but will sag off them at just the point where Kofi has the ball in dribbling mode. So he has less visibility as to what to do next. Sometimes he'll just power through it and lay it in. Sometimes he'll pass out. But it seems to be more difficult for him than earlier in the season.
Where Curbelo will help, I hope, is that he'll get the ball down to Kofi in a better position where he doesn't have to dribble down the paint to the basket as much. The lower down the paint the entry pass comes from, the easier it is for Kofi to just lay it in or dunk. Curbelo's passing and dribbling ability can free that clog up. That's what I've been waiting for since the beginning of the season, and I hope it will be in abundance these last 10 games.