Ok, so my younger brother has a Prelude alto sax:
http://www.musiciansfriend.com/woodwinds/prelude-by-conn-selmer-student-model-alto-saxophone
Bought it about two years ago; seems decent enough, and he's been playing about 2 years now (and doing extremely well). I took alto for a couple years in school also.
Anyway, the original mouthpiece was having issues squeaking/squealing, unless the reed was on absolutely perfectly. So we decided to buy a new mouthpiece, namely a Vandoren AL3. However, when we tried fitting it, it's extremely tight! The old mouthpiece can slide almost to the end of the cork (covering up the cork entirely), but this new one can barely make it a quarter of the way up. Is there something wrong with the mouthpiece and/or the cork?
Because the AL3 mpc won't slide up very far, the sax is a half-step flat (A "C" on the sax is like a "D" on the piano, instead of the normal "Eb") I don't want to force the AL3 mpc as I'm afraid of damaging it (who ever heard of paying $120 for a chunk of rubber? hahaha).
So, what should I do?