Overhead shot to give an idea of what it looks like with everything in place.
 

Showing the position of the pegs in the off state.  The shanks are clearly able to go
between the pegs.
 
 

The rail is in the 'on' position; action out of the piano.
 

The pneumatic and rail in positon without the action installed.
 

The hammer shank is pushing the rod.

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