Airy/thin bari tone on a new bari sax

Oct 27, 2018

So today, I just got my brand new bari :,). It was totally amazing but I found that the tone quality on the upper octave G to B sounded like they totally had an air leak. The sound just dipped in sound, and an audible leaky sound was coming though. I know there isn't really an issue with the rest of the bari but the notes sound so weak and undesirable. Any ways to fix this?
P.S: The octave mechanics seems to be fine, since the first octave closes shut when the other is activated and vice versa.