Recently I got an embochure change, I still play a little offcenter and use a little more bottom lip, but I think that's because the way my teeth are, they aren't too straight and i have a slight overbite. I have recovered from the embochure change and can usually nail a high C, sometimes getting out a high D, but it takes me a while to get warmed up. I've been told it's all in my head, and I approach playing with that attitude but it doesn't always work. When I first get out my trumpet I can barely hit a g but after some lip slurs and scales I can play a strong high c. I have a dilema because my band director either doesn't think I have the chops to play lead (i'm a junior in high school by the way) or he just thinks I have an amazing middle and low register sound (which my private lessons teacher says i do). My director has told me he loves the way my real low register sounds (like low g's) but he doesn't think I can play very high. I tried out for jazz band this year and made lead trumpet (interestingly enough beat everyone, yet my teacher still places me on third part) because the director of jazz band who teaches sixth graders, but also the high school jazz band says i sound great all around. He has heard me nail some high c's and d's and they project well, and I want to be able to do this in band class. The problem is, my concert band director puts me on third part so I never play anything high to loosen up my high register. I just want to be able to play at my normal range with MINIMAL warmup time needed, so I can play some scales two octaves and he can hear me and know he placed me in the wrong spot. I have tried playing a buttload of scales two octaves every day and am playing 3+ hours a day just at school, and maybe an additional 45 minutes on my own at home. Also any ideas to decrease fatigue in my chops? Right now I sound like I've been punched in the face from playing a lot this week, and next week I don't want that to happen because my jazz band will be playing at Purdue.