First puzzle of the new year

[Wimblees@aol.com]

In a message dated 1/1/2003 9:12:17 AM Eastern Standard Time, pryan2@the-beach.net writes:

> I repaired a rather new Petrof uprignt yesterday that had keys sticking down.  After easing a number of the key bushings, all the keys were working smoothly once again until I pressed the damper pedal and all of a sudden I had a bunch of different keys sticking down again.  I eased them and problem solved.  My question is: why should pressing the damper pedal 
> have any effect on sticking keys?
>  
> Phil Ryan

Phil

Because the damper levers are helping the wippen push back down. The wippen pushes the key back. When you press the damper pedal, it disengages the damper levers. 
Wim