you'd kinda expect >problems at either extreme of high or low keys, but D's a bit >middle-ish for boundary conditions. or is it that high E and F >just don't get played much, so the problems aren't noticed? May it be that this the first key with the small slots (which is the case from what I know)? In that case we would be in boundary conditions.
Michael Peloquin http://www.globerecords.com/cgi-bin/db/search.cgi?specific=itemno&phrase=GLO-025