A to D octave issue
I play a great 5 digit Mark 6 alto in a number of bands. I am a seasoned player with decades of performing. I also play all saxes and do not have this problem with other types.
This mark 6 and I have an issue when we go from A with octave down to D with octave. If I push the horn to swing right into the D with plenty of volume I usually get a very loud altissimo note. So I have to be sure and toungue the D.
I have had many discussion with technicians that declare the horn is working properly.
What should I look for and consider with this issue.