Ever since picking up a Schilke B6 Bb trumpet back in March or April, I have really enjoyed playing it and I have been reading (Thanks to Jim Donaldson and the Schilke Loyalist website) some of the writings of Renold Schilke regarding his Bb trumpet designs and the great steps he took in trying to make them as perfect as possible - something that I feel every time I play mine. Anyway, I was perusing an article about nodal patterns in brass instruments that he wrote, and this paragraph (quoted from the Schilke Loyalist site) jumped out at me: The part that I highlighted in italics and bold sounds very much like what Gene Pilczuk did with his leadpipe, only it sounds as if it is all done on the inside of the leadpipe. Does anyone know if this is close to the same thing, and if it is, is it something that they continue to do now? It is facinating to me that Renold Schilke went to the lengths that he did while designing, prototyping and testing his trumpets before he would sign off on them and offer them up to the public. I've heard that if you are lucky enough to find one in good shape, the 60s era Schilkes are absolutely amazing trumpets, and if a good deal presents itself, it should be jumped on without hesitation.