I can play a solid high C sticking my tongue out over the bottom lip and forming the embouchure with the upper lip and tongue. I simply don't buy most of this embouchure "crap", especially when it is not qualified by what is wrong and what needs to get better and why a different geometry should help. This does not mean that the essence of any of the "reasonable" methods is not valid. That essence is: PRACTICE what is good for you. Maybe we need to define embouchure and what justifies a change, as ANY player that practices diligently will change embouchure through natural development of the muscle tissue and coordination between air, tongue, brain and chops. To me, an embouchure change is a significant change in the geometry of lips to mouthpiece (proportions upper to lower or angle of the trumpet respective to the jaw) or a signficant change of the position/use of the tongue in relation to pitch/volume. Again, addressed to all that do not want to mess themselves up: for players with reasonable breathing and body use, the mouthpiece can be in a variety of places and still get a decent sound and range. If there are deficiencies in playing qualities, the embouchure will not fix that, just like a diet consisting ONLY of low fat food will not improve our health. Progmac, you made a decision for yourself. After 14 months you don't even have your range back, but you claim endurance and control. I have never heard you play, but I would still label this escapade as a failure. Why? Quite simple. In 14 months of doing enough of the right things, your range should be essentially unlimited - albeit with the sound just getting thinner the higher you go. I am not saying that the change in lip position was wrong, I am saying that you have not identified the true problem that you have. For those of you living in London, you can also get to Manchester by travelling south. You will just get wet and it will take a lot longer. Embouchures are no different! Without a clearly defined picture of what is exactly wrong, what is possible and how to get there, most players are just going south. Progmac, if the lip position was the lions share of your change, you may never get where you want to be. There are most definitely issues with your body use, perhaps tongue position too. NEVER can deficiencies be caused by a single factor as we learn to compensate over time. No solution can be changing one thing.