With respect to Bruce Grimes' question concerning the text of the
tag on the Duo-Art action stack, I have a Duo-Art stack with a tag
attached to it which states the following:

  Bleeds or 'Vents' in the pneumatic action,
  pedal valve box, bottom action, and theme
  valve box top action are placed in nipples;
  all other vents will be found in usual places.

I hope this helps.

Barry Dennis