I'm still not quite believing the results... Dedicated comeback player since 2009. University music education. Former high school teacher. Recording engineer-trained ears. Big band (solo chair) & community concert band (1st book). Practicing 45-90 mins/night. Small house. Very understanding spouse Chops felt puffy night after night. Read good advice to start tone softly without tongue attack. Experimented to make that happen. Also recalled reading comment by Phil Smith about remarkable difference as a result of lowering the angle of the horn a bit. Combined the two and went looking...and found the sweet spot where everything lined up. WOW. Tone starting softly all the time now with breath attack only. Finally a solid embouchure after years of insecurity. Range taking off. Control is amazing. A flat chin and never-before-experienced lower lip control now happening. Tone centered. Playing r-e-l-a-x-e-d in all registers. Not a pressure player by any means, but what a difference just a slight lowered angle made. Not for everyone, of course, but I'm getting amazing results and having a blast. Very, very satisfying now to play trumpet. Freely offered.