Dear List, I am in the process of rebuilding a 1912 Knabe model B grand. As this piano has had at least two hammer set replacements, and because many of the hammers on the last set were broken or missing, the determination of the factory ordained hammer striking line is impossible. I have considered hanging a few trial hammers at 1/7 of the speaking length, and sliding the action in and out until I get the best sound, and then setting the striking line from that reference. Is there a better or more efficient way to proceed? P.S. To complicate matters further, this particular piano has very different action geometry from other Knabe B's which I have rebuilt. The hammer shanks (to fit in the treble) must be about 1/8 to 3/16 inch shorter than other Knabes and comparable sized grands of other makes. Frank Weston
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