So, I had my first lesson with Tom Hooten this weekend, and he discovered something that really shocks me. Tom sounds incredible, by the way. Anyway, he discovered that half of my face does not vibrate!!! I've never used an embouchure visualizer (gotta get one now), but he had one and we looked at my buzz... yeah, one side (my left side) doesn't buzz when I play. He thinks this, along with some other things, are what's causing my lack of endurance. I've had a lack of endurance for a long time, so I'm hoping that if I fix this it will help a good bit. Have any of you ever heard of this and have heard how the person fixed it?