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<DIV> <STRONG><EM>HI Terry</EM></STRONG></DIV>
<DIV><STRONG><EM> I have 20's D & 70's D in the shop. I can fit
the 20's action into the 70's but not vice verse. The drop screws
hit/slam into the stretcher. I've seen string heights vary enough
that one would not be able to do a quality hammer job by guessing. Usually
note 88 string height is about 193 mm off the keybed with the middle of
the piano a bit higher at 194 to 195mm. Steinway S,m,l's,O's
& A's etc seem to be between 188 & 190 at note 88 and a bit higher
in the middle. Standard bor is 2 1/8 th in the bass & 1 13/16 this tenor
treble/ B C D are average about 3 to 4 mm higher....bbbuuut... there are
always exceptions so proceed at your own risk.</EM></STRONG></DIV>
<DIV><STRONG><EM> Dale</EM></STRONG></DIV>
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style="PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: blue 2px solid"><FONT
style="BACKGROUND-COLOR: transparent" face=Tahoma color=#000000 size=2>Hmm,
that's surprising. The stringing scales are the same as are hammer specs, at
least according to mapes and W.Brooks. The latter just would like a few
original hammer heads weighed. They already have bore, pitch, size and all
that.<BR><BR>Terry Peterson</FONT></BLOCKQUOTE></DIV>
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<DIV> </DIV></FONT><BR><BR><BR><DIV><FONT style="color: black; font: normal 10pt ARIAL, SAN-SERIF;"><HR style="MARGIN-TOP: 10px">Start the year off right. <A title="http://body.aol.com/fitness/winter-exercise?NCID=aolcmp00300000002489" href="http://body.aol.com/fitness/winter-exercise?NCID=aolcmp00300000002489" target="_blank">Easy ways to stay in shape</A> in the new year. </FONT></DIV></BODY></HTML>