I have recently switched from a Yamaha 62 to a Selmer Super Action 80 Series II, and I have additionally switched mouthpieces. With the Yamaha, I had been using a Rousseau 4R, and with the Selmer, I'm using a C*. These mouthpieces are supposed to work better with these horns. While I do have to adjust to the saxophone, I find I'm having more trouble adjusting to the mouthpiece. I'm not as able to easily get a good tone (particularly on lower notes), and my vibrato isn't working very well. Sometimes I can feel air escaping above my lower lip, but I'm experiencing that less and less. Does anyone have advice about what I can practice to get used to a new mouthpiece or what I can do to adjust to this particular mouthpiece?