I agree with ROWUK. I purchased 3 Bach 3C's last year (1 for me, 2 for my kids), and they all felt the same. Blame it on the horn. Blame it on the wear of the older mouthpiece. Blame it on the amount of pizza stuck in the older mouthpiece. Blame it on the player. The last thing I would blame it on is manufacturing differences between the two mouthpieces.