Slippery keys, center rail studs, etc.

[Newton Hunt]

Dear UPT
      The only caution I would suggest is that after turning up the glides
check for any knocking when you forcefully depress the sustain and the shift
pedal.  Force exerted on the the pedals can lower the keybed at the attachment
of the lyre.
      Raising or lowering the balance rail will have no apprecaible effect on
the keyframe or it's state of warpness.
            Newton
            nhunt@rci.rutgers.edu