I can't ever remember (until recent years) not being able to do LOUD when required. I'm not talking about blasting, but being able to project a tune out into a space. Even at the age of my avatar (around 11/12) I could knock seven bells out of the standard trumpet voluntaries and know that every note would be heard. Time warps the memory, but I believe I possibly had something more of an open trombone type embouchure than a typical trumpet one. Fast forward to now. While rebuilding with what I understand to be a more orthodox trumpet embouchure, I've been aware of experiencing considerably more resistance due to having my chops better (or at least differently) aligned and less open. Only to be expected I suppose, and actually the ability (Hobson's choice) of being able to practise quietly has helped in some respects. But things are not staying that way. Every now and then, and in fits and starts, the resistance changes, often just for a few notes in a particular range. And this upsets any balance I've found between chop tension, dynamics, pitch and air support. Typically the trend is to become more open, and each time it feels as if I'm having to relearn how to play quiet again and find a new equilibrium. I don't remember going through this as a child, or reading anything about the process here or elsewhere. It all seems a bit random. Anybody any ideas on how to manage the process? If indeed it is manageable.