I am starting to rebuild an A-roll piano with a Simplex action stack.
In each pneumatic the moveable valve button is faced with leather on
each face.  On the stem side there are two rubber cloth punchings,
approximately 9/16" x 5/32", beneath the leather.  Is there a source
for these cloth punchings or must I make them?  Any help will be
appreciated.

Bob Oppenheim
from downtown Erin, New York, now under 6 to 8 inches of new snow.