I have experience playing in both jazz and classical, but just recently noticed something about my playing. Playing on the 13a4a, I feel much more comfortable, relaxed in my embouchure... this is the piece I use for lead/ some pep band playing. Playing on my 3c, I have a hard time finding that same solidity in my lips.. sometimes it feels like I can't get the sound to center as well, or to be as open/relaxed. Any suggestions why this may be? I had an instance after spring break when I hadn't practiced more than once every other day, but I came back and my sound on my 3c was very open, relaxed, free, and big. I was very surprised! This continued for a few days, but eventually subsided, and I can't figure out why that may be... Despite this, my flexibility and range, and other aspects have remained largely the same. Thanks for any replies!