Hello, I'm rebuilding the action for a 1968 Kawai Model 600 (6' long). The hammers are hung in a straight line, but the distance from the hammer flange center pin to the center of the hammer molding tapers from 4 7/8" in the treble to 5" in the bass. The top hammers sounded decent before I took the action out of the piano; unfortunately, I didn't check the case parts to see if I could move the action in or out. Is there any reason that I shouldn't duplicate the original specs? Is it important that all the hammers are hung at the same distance from the hammer flange center pin? If it makes any difference, I did change the bore distance of the hammers from 2 3/16" to 2 3/8" in the bass and from 1 7/8" to about 2 1/8" in the treble; this was done due to the hammers overcentering and the action not being able to be regulated. I look forward to your responses. Respectfully, Jon -- Jon Ralinovsky Piano Technician Department of Music Miami University 513/529-6548
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