<HTML><FONT FACE=arial,helvetica><FONT SIZE=2>In a message dated 5/10/01 5:45:58 PM Central Daylight Time,
<BR>davidlovepianos@hotmail.com writes:
<BR>
<BR>
<BR><BLOCKQUOTE TYPE=CITE style="BORDER-LEFT: #0000ff 2px solid; MARGIN-LEFT: 5px; MARGIN-RIGHT: 0px; PADDING-LEFT: 5px">The issue is not whether the holes are centered but whether the hole in the
<BR>bushing lines up with the hole in the block. Bushings are not always
<BR>uniform and even if they were it only takes a slight error in marking to
<BR>not
<BR>have the hole in the bushings line up with the hole in the block. If they
<BR>don't, the pin can bear on the bushing rather than on the front side of the
<BR>hole in the block and can effect tuning stability. Better to drill through
<BR>both insuring that the holes are aligned.
<BR>
<BR>David Love
<BR>
<BR></BLOCKQUOTE>
<BR>
<BR>The wood of the bushing is not hard enough to effect the tuning pin, and thus
<BR>effect tuning stability. I don't know why some companies use bushings in the
<BR>first place. I guess maybe to look good, and keep the dust out of the pin
<BR>block. (that's a joke). Or maybe, as you have found, it centers the drill
<BR>when drilling holes in the pin block. Technically, you don't even have to
<BR>have bushings in plates that call for them, because I don't think it has
<BR>anything bearing on tuning stability.
<BR>
<BR>Just my 3 cents worth. (1 cent surcharge for higher gas prices). :)
<BR>
<BR>Willem </FONT></HTML>