[CAUT] Renner replacement back action problem

[Shelley]

This back action was replaced about 8 years ago by another tech, I've had
problems with it all along.

Now here is one that I need help on figuring out.

This is a Steinway L in a basement ensemble practice room that is not air
conditioned (so windows are left open) and has a Dampp-Chaser system.

The Eflat and E (center octave) started clicking a while ago and we just got
time to take it apart and try to figure out what happened.  The E damper
spring is gone.  Could Not Find It Anywhere!!! Amazing that it still damps
and never sticks.  We removed both dampers and used every method that we
could think of to find it, it must be in there because it is clicking.  Sort
of a grinding click on the return.  But, Only when the keys are activating
it is it audible, when one works just the dampers there is barely a whisper.

What the heck is going on?  Anyone ever run into this problem?  We've looked
everywhere in the action the trap, the back action.  Are those springs solid
brass?  Nothing is attracted to a magnet everywhere we have tried.

Help or ideas will be greatly appreciated.  Of course, avoiding removal of
the entire damper system is the aim.


Thanks for your input.

Shelley Byrd Anderson
North Park U.
Chicago