Hi Manny! Lately I've noticed that when I do any type of ascending slur (for example a slur from low C to middle space C) my lips don't vibrate as freely when I get to the higher note (A-B-C and higher). For some reason it feels like my mouthpiece (a bach 3C) is too small and it feels like it doesn't give my lips the room to vibrate freely. -Could this be possible? -Does this situation sound like a scenario for a MP change? -Are their any other things I should try before experimenting with a MP change? thanks for any help.