Advice on Bb...

[tseligas]

It happens to all clarinets. That's why they do tricks like the once I am showing. Now in a performance if it is a passing note probably nobody will notice but If lets say you are playing a long Bb then you need to have good tone.

My clarinet is Amati Craslice. Chechoslovakian.!!

And you are absolutely right about the last comment. that is why I made that second video on how to check your mask!! We think alike!!

Did you try to find resonant fingering for your clarinet?