At 2:08 PM 1/29/96 -0700, John Minor wrote: > A local top-quality rebuilder has installed new NY parts in a >Steinway D and is having some unusual problems. The owner of the >instrument is a concert pianist with high technical demands. > Here is what happens: On fast repetition, the hammer gets stuck in >the backcheck before the jack re-sets. We've check: > >Key height >Dip >Hammer travel >Center pins >Backcheck height >spring tension >let-off and drop >jack to knuckle >jack in window >Key height > ________ The only thing I can think of that is not covered in your check list that will cause this to happen is too much space between the shanks and the rest cushion. I have seen this on several D's, and if that is the case here, you need to raise the height of the back side of the action brackets. This process will not change the geometry of your capstan/heel alignment either. Glue the proper amount of thick balance punchings around the action screw holes. Dennis Johnson St. Olaf College johnsond@stolaf.edu djohn@skypoint.com
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