Hey guys, I have tried every technique in the world to stop biting but I just can't prevent my lower lip from pushing up when going into the upper register. I know that the support is supposed to come from the muscles on the side of the mouth but I just can't seem to get them to work properly. Even when I do, my lower jaw is still pushing up causing my lip to get sore. I am really concentrating on blowing with my diaphragm which has helped a little bit but not enough. I don't know what else to do and I know my tone will never develop in the upper register as long as I keep doing this.