Scotty Greene said, "... and moreover the metal pipes were all tuned as
sharp as they would go with the slides all against their stops, which
makes me think it was tuned too high even before we boosted it [the
piano] up to A=440."

Upon reading this, the first thing I thought of was that Coinola was
manufactured for a location considerably higher in altitude than where
you currently have it, which would raise the natural frequency of a
pipe.  Is this the case?

Marshall Jose

 [ Maybe the hoses to the piano (or to the pipes) are "transposed"
 [ one note.  -- Robbie