[ Rob Edwardsen wrote in 110723 MMDigest --
> I am working on an early (1915) Autopiano and am having trouble
> getting the secondary valves to seat.

I've found that secondary valves malfunction for several reasons:

1. the "inside valve" has been pressed too hard between the retaining
collars and cannot flex and seat against the metal plate;

2. the buttons are not screwed down enough and the pouches are holding
the valves open;

3. the pouches, if old, have shrunken and are holding the valves open;

4. the metal seats haven't been sealed properly;

5. the metal seats haven't been cleaned and coated;

6. the valves have too much or too little travel;

7. all the felt from the fiber guides is gone;

8. the gasket in the L-shaped board has not been replaced.

The list goes on and on, but these are the common reasons.

Tim Gautreaux