Ive always set the mouthpiece pretty low on my face. In fact I hardly put any upper lip into the mouthpiece. This hasn't become a problem for me as I can play with fairly good tone and I have better range and endurance than my entire trumpet section (high school junior). That said a lot of people say that I am playing wrong and that there should be more top lip in the mouthpiece. I am of the "if it ain't broke dont fix it" mindset but i just wanted to hear your guy's opinions on this topic.