So, with school finally out, I set out to fix my embouchure to one that feels more comfortable and minimizes the use of my corners and any injury I manage to sustain (my private lessons teacher helped me, he took from Don Jacoby and the method is similar to spitting out a seed). But unfortunately, as it is Summer, I haven't been able to get together with my teacher. So I've been using a regiment of long tones, scales, and tonguing exercises to get used to this new embouchure before marching band comes around in August... It started off rather shaky - I had a bit of a problem sustaining notes. Granted, it was much easier to play notes, when I would try to play a G on the second line I ended up with a middle C, so it became more of a struggle to play lower rather than higher.... But here's my problem. I can play an F scale two octaves at this point, but I noticed that even though my upper register is progressing at a speed I'm very satisfied with, I still have this awkward double buzz around G to Bb in the staff. It's been there for the longest and I've been trying to do long tones every day to stop it, but I'm not sure if there's another way. When I get above the staff my tone clears up and the double buzz is gone, but in the staff it's an ongoing battle... I think it's because what I'm used to setting my embouchure for is different from the way my embouchure is now, so maybe my tongue is in the wrong position since this new embouchure takes so much less effort. I'm not sure. Does anyone have any suggestions on how to remedy this and what I should do to keep progressing?