Llopis Signature Eb Mouthpiece

So far I have been impressed with the improved intonation this mouthpiece helps with. My setup with the Backun Llopis Signature mouthpiece, Legere French Cut reeds and includes a Backun cutback barrel and the "CF" extension for my Buffet R13 Eb. I was looking for a mp/barrel combo that would work well with the synthetic reed. So far, so good ! Thanks Backun.

Upper notes were close, lower register is considerably flat. Even with a shorter barrel, it is way off! Very disappointed....

So easy to play! having so much fun with it!