Hi Manny, Sometimes I get a very annoying fuzz in my sound, which, I'm sure is caused by an aperture that's too large. The problem is on some days it's there during my warm up and never goes away. Other days it starts to happen as I get tired. Obviously on the days where I start out with the fuzz is a very bad day. To compensate for the huge hole I end up putting tons of pressure on my upper lip which in turn means I can play effectively for 20 minutes, then I'm done. In my job I really can't that happen as I'm performing all the time. What can be done to make sure I don't blow my aperture out, or better yet, keep it focused all the time? I've done a good bit of isometric type work-outs for my corners so they feel pretty strong. Is there anything else? Thanks a ton!