well this is weird. I read this and got my horn out and played some notes. Even with my 5th valve tuned to 1-2, I still use 4-5 as my low F fingering and it is perfect in tune with the first valve F right below the staff. So i tried it the other way around (1-2-4) and the F came out as well.
Maybe 513?
by the way, thanks for making me feel uber dumb. After rereading the page i almost went to get my horn out and try this to see what note would come out...then stopped and actually
thought about what i was about to do.you almost got me.
