Great posts / interesting thread. I’ve been playing well with what feels like a very compact embouchure / setting. I remember experiencing this before, when I moved back to a 3C from a 1 1/2C and 1 1/4C mouthpiece. I’ve broken my tendency to tense up and blow more air as I play higher, for the moat part. Keeping things centered and compact / forward and working on harmonic slurs / Flexibilities and different articulations is working well for me.