I have a M. Schulz Piano Co. player piano action with the famous tiny
pneumatics inside the value chest.  Rolls with wide holes and short
notes plays the best.  On some long notes the keys flutter up and down
rapidly.  Newer rolls with thin paper and thin holes don't play so well,
either.  Any ideas?

Matthew Schultz

 [ A 'normal' action with a pouch would display those symptoms if the
 [ pouch is leaking or the bleed is clogged.  I don't know about the
 [ unique M. Schulz action, though.  -- Robbie