i was buzzing alot, 14 hours this week, and suddenly my buzzing is going wrong, it has this raspy sound to it now, ive taken a few days off to heal, applied chopsaver and alot that good stuff...... it hasnt gone away! does anyone know whats going? a fellow trumpet player in need would greatly appreciate it!!! p.s. no, my lips dont normally go through this kind of strain, only 7 hours a week normally could doubling my mouthpiece time somehow have altered my embouchure? can it be changed if it has?