Rick Carlisle insists that the Mavericks’ actual move to have Harrison Barnes play exclusively at small forward didn’t happen until the last two games.No doubt, he’s right about that. He knows his team a little better than the rest of us. Carlisle said that up until the last two games, Barnes was putting in two-thirds of his time at power forward.But Barnes has been a true small forward more than a power forward for more than just the past two games.