Spring fever (or feverish springs)

[A440A]

Dave writes:
<<Does anybody else like to eliminate that "kick" in the key by pinning
the balencier tight?  I like it at about 8 grams.  You can get lots of
spring to the jack and key return, but you don't feel the "kick."
>>
      Yes, you can get a lot of spring in this way, but it often makes the
point of contact with jack tails and balancier pad very noticeable in
pianoissimo playing.  With increased spring pressure and balancier pinning,
there is more of a bump at the beginning of escapement. This is also another
big difference in the modern grand action and the Viennese actions.   
   Stephen Birkett,  you out there and want to comment on this? I understand
that properly regulated fortepiano actions didn't have the escapement
occurring in the key stroke, but rather, it happened simultaneously with the
key hitting the bottom of the dip, i.e., no aftertouch at all?  Is that right?
Regards, 
Ed Foote