I have been noticing that my range has gotten way worse from last year. I used to be able to hit high E's above the staff sometimes and C's constantly. (about August/September last year). I switched my mouth piece (7C to equivalent of 1-1/2C) and I was still able to maintain my range. But my range gradually got worse and right now, my highest note is a B above the staff. Does anyone know what's happening? I don't do that much range practice, but that was always the case. But I practice A LOT MORE than I did in August/September. *Sorry, I forgot to say that I switched in September.