In Robert Stanoszek's plans for building a Wurlitzer 105 band organ,
the five bass helper cello pipe foot taper size shows as largest
pipe 3/4 inch at bottom of taper but then 9/16 for the next two
largest pipes and then 11/16 inch for the two smallest cello pipes.

Is this correct for some reason?  I am making a few extra sets of
these pipes.

Robert Leber
Fremont, California