Hi Manny: I have noticed that "mouthpiece buzzing" as my first execise of the day is a great indicator of how the rest of the day is going to go. After 5 days of very strong salsa playing I notice that I could hardly buzz. Its as if my aperture is just too wide. Terrible playing follows shortly after the bad buzzing. Is there anything you could suggest to get the correct buzzing "back on track"? Is their anything you can suggest to get the aperture back to its 'Normal" state. Thank You!