I bought an excellent 1907 (approx.) Besson "Prototype" "Chicago Bore" euphonium from a seller that didn't know about "pitchi-ness" and I didn't check with a tuner when I initially play-tested the horn. I only discovered the low pitch nature of the beast with a tuner several days later - and it has an "L" stamped on the first valve casing above the serial number. It plays great and I love the sound but I need to play in ensembles - don't we all - and wonder if anyone has had this work done. I searched the forum and didn't find anything specific about this issue. The tuning slide is before the valve block and looks long enough to cut down and maybe the lead pipe could also be reduced. I got the horn for a pretty low price and would invest in the surgery if it would work. Thanks in advance for any ideas.

Brad