hi,

they are

1, goes to the expression box, middle to the valves. if duo art is 
   switched is closed otherwise open by holes.
2, goest in the same box but to the bottom.
3, goes to the themodist/tracker adjustement valves box. there comes 
  the vacuum.
4, sealed
5, to the hole for soft pedal on the tracker bar 
6, to the hole for the dampers on the tracker bar 
7, to the soft pedal bellows
8, to the dampers pedal bellows

laszlo