Slow Hammer Return

[Newton Hunt]

Then it is a matter of determining the balance weight, as David posted.
Measure the down weight and the up weight on both keys.  Average them togather
and that gives you the balance weight.  Knock the action lightly to break the
friction.  Balance weight should not be much lower than 36 or so.  If the
balance weight is low remove on lead from the very front of the key and measure
again.  If it is too high cut the weight up into two pieces and place a piece
over the hole it left.  Continue to reduce the size of the wieght until you get
the weight you want.  Place this weight in the hole, swedge it in or glue it in
place.

Take half the difference between the up and down weights to get the amount of
friction in the keys.  If these numbers are radically different (8 and 24 as an
example) then you are dealing with friction as the problem.  Go looking for it
and correct it until they are reasonably close, i.e. 8 and 11.

If you have more questions post me directly.

      Newton
      nhunt@rci.rutgers.edu