I understand your response. Not sure if I understand the term slotting though. I'm a comeback player (25 years since playing). I only have H.S. horn knowledge.
Another thing that is new to me are those heavy bottom valve caps. Not too sure how they affect the sound.
Sound posts, mouthpiece intensifers, heavy bottom valve caps, oh yeah, and those new spit valves.

Much has changed in 25 years.

Wait, the new term is "water key", I guess even trumpets have to be "politically correct".
