Rep. Lever Springs

[David Porritt]

My suspician has always been that the butterfly spring - when compressed
- is compressed at both ends i.e. the jack and rep lever.  This
additional compression can't help but increase repetition.  Check out the
Renner Steinway replacement wippens (whippens, you choose) have both the
advantages of the butterfly design _and_ a screw adjustment.  These are a
significant improvement IMHO.

Dave Porritt
SMU - Dallas