Educational Question about clarinet Pitch & Tuner

[tseligas]

Zwniana, here is a great read on clarinet tuning that Chitown was kind to bring to my attention. Read through the whole thing:
http://www.wikihow.com/Tune-a-Clarinet

Also is the other barrel Longer?
I would try 2 things of the bat.
a) Play for 10 minutes whatever to warm it up so it is stable
b) Set the tuner at 440hz See which barrel is in tune
c) Set the tuner at 442 hz. See if the other barrel is in tune.

If you got one barrel for each pitch then that's great.
Let us know the outcome of this minitest and we ll guide you further!

Since you bought the clarinet brand new I doubt it is out of tune!

Also if this test is unsuccesful...then yes the mouthpiece does play a role especially in the small clarinets. You see if you use a Bb mouthpiece on a La clarinet because the instrument is getting longer the effects of a small mismatch is not so augmented. But having a smaller clarinet same change in length will have a stronger effect.

Another Q. Did you get the mouthpiece with the clarinet? Or did you have it in the past? I can modify it for you in no time if needed....
But the thing is that if you say that the tuner shows that the pitch is high then that means that you need to lengthen the clarinet...so that probably aint the case.... Sorry for thinking out loud guys!!!