An almost buried feeling of my lips not being in the right place - a bit too “pinchy”, or maybe too open, lower lip too far down so slightly set-in, blowing at the wrong angle. What a lot of information - it must take a lot of energy and worry to have all this in my head, even though it is held almost non-verbally. It is obvious in a physical sense but not analysed until I consciously did so. Anyway, the feeling is that if I play like this I would not be very flexible. It feels too stuck. That is how it feels, but I can’t make it go away.
Of course - do it more! Get stuck into the mouthpiece more, even if it does feel too “tight” and open-mouthed. Results are excellent - good sound, flexibility (contrary to my expectation), able to blow freely, feeling of contact with the notes, sort of “tasting” them. Super, enjoyable performance.
So perhaps the actual inflexibility I started with was because of my resistance to what was happening, my trying to put right what felt wrong. When I went with it, flexibility was excellent. Your body knows more than your head.
I did it again! In a silent film performance with the BBC Symphony. Great feeling.
So, in general: make contact with your unexpressed assumption about how to play. Go against it, but with the thing that feels wrong or uncomfortable.