[CAUT] lighter touchweight

[Jon Page]

If the hammer blow and key dip are where they should be, where does the jack
end up at the bottom of the key stroke? If there is too much after 
touch, the jack will be buried into the repetition stop felt. This 
stresses the jack's glue joint by being bound
between the let off button and the felt.

Increasing the blow or deceasing the dip will not address touchweight.
One trick is easy: relocate the stack.

By moving the stack back a little, the jack will be lifting more 
forwards on the cushion.
In order to do this though, the keyframe would have to comes forwards 
by the same amount to maintain strike point (on one piano, it 
improved this alignment).

If the jack is just clearing the knuckle, this procedure is probably 
not viable.
-- 

Regards,

Jon Page