If you're having hassle with notes from the 1st B over the break and up, then the challenge could be a variety of things. If they aren't communicating at all, you may want to try tightening up a little bit, in order that the reed can be in a position to vibrate more. If your embouchure is already very tight, then that you may lighten up, also to aid the reed vibrate more. It would also help for you to move the reed down on your mouthpiece. You could try a smaller size reed ex. if you are on a 2 1/2, use a 2, especially if if you happen to try to play, the air seems to pass right under the reed.