<HTML><FONT FACE=arial,helvetica><FONT SIZE=2>In a message dated 8/14/02 11:47:20 PM Central Daylight Time, rrg@unlv.edu writes:
<BR>
<BR>
<BR><BLOCKQUOTE TYPE=CITE style="BORDER-LEFT: #0000ff 2px solid; MARGIN-LEFT: 5px; MARGIN-RIGHT: 0px; PADDING-LEFT: 5px">On most pianos with exposed blocks, the block itself will lean forward 6
<BR>or 7 degrees instead of the pin leaning back 6 or 7 degrees. Kind of a
<BR>neat idea actually.
<BR>
<BR>Rob Goodale, RPT
<BR>Las Vegas, NV
<BR>
<BR></BLOCKQUOTE>
<BR>
<BR>Ron
<BR>
<BR>Is that the case with the open faced Petrof pin block? It was my understanding that there is no design difference between the Petrof III and the Petrof IIIM, which has the open faced pin block. (Both are 6'4".). I agree with Ron's assessment, that there might be more to the tuning instability problem than the open face pin block.
<BR>
<BR>Wim</FONT></HTML>