I have a young lad in our beginner band who recently moved with his parents from New York. He played trumpet in elementary school, so we gave him a cornet. He has what some people would call a "pivot". It's very, very extreme. (Think of Dizzy Gillespe). How he can see the music on the stand in front of him is beyond me, his face is almost parallel with the floor! I tried to straighten it but to no avail. It's VERY ingrained. It's what I would consider bad technique. Any advice on how to correct it, or even just "soften" it?