[pianotech] Regulating drop

[Jon Page]

>Fine tuning the simultaneous contact time is done with the distance
>the jack is situated under the knuckle. This is done after multiple
>refinements of the two.

That is to say the position of the jack alignment to the core,
not how much below the rep level it rests.  It's a very fine
balancing act to avoid cheating jacks.
-- 

Regards,

Jon Page