Re: Consistancy in Tone..
do some reading on the dreded emboucher thing
many different ideas are out there
but, understand air flow and how it relates to you personally. each player is limited to his play and sound according to the makeup of, his body, inside mouth, roof of mouth, teeth, strength of your lips. there are thing you can adjust olny by opening or closing your chamber inside your mouth. experiment with combination of setup and this and see if it affect any change. also there is a book called amazing phrasing with a good section on this, also good scale practice. have fun