So, let's talk about damper lift

[Don Mannino]

Ed,

I generally like to set the damper lift height with the pedal to be 
about the same as the key lift, or slightly less on damper systems 
with dual pivot designs (where the damper tray pivot point is not 
aligned with the underlever centers).

If the keys lift the dampers slightly with the pedal pressed, it 
should happen after letoff, in the realm of aftertouch.  The slight 
added resistance, being after the maximum resistance at escapement, 
will not be noticed by the pianist, and can actually be sort of beneficial.

With the dual-pivot damper tray setup, making the pedal lift less 
than the key helps with the upstop rail adjustment, allowing it to be 
kept closer.

Don Mannino RPT