I’ve experienced an airy sound before and battle that on occasion; it’s been better lately. My recollection / understanding is that when that happens it is an indication that our lips are too close together and trying to play softer and open up usually helps me. My understanding is that there’s a balance between Air and Shape that we have to build a sense for and we’re moving from defining that balance one way with our previous setup / use of air to a new setting / use of air, so it takes time to redefine that and build consistency. The good news is that it becomes easier to play in time.