Adjusting dampers to tray

[Matt Wynne]

Greeting esteemed colleagues:

I will be reassembling a damper system in an old S&S grand.  It is one of 
those systems that was born without regulating screws on each underlever 
for adjustment to the lift tray.  Is there any efficient way to adjust them 
so that they all lift in unison with the pedal?  I'm aware of the old 
method using center rail punchings, or something similar, as shims, but 
there must be a better way.  Any advice would be appreciated.

Thanks,

-Matt Wynne