<HTML>In a message dated 12/1/00 6:50:36 AM Pacific Standard Time, michel_lachance@hotmail.com writes: <BLOCKQUOTE TYPE=CITE style="BORDER-LEFT: #0000ff 2px solid; MARGIN-LEFT: 5px; MARGIN-RIGHT: 0px; PADDING-LEFT: 5px">No offense meant Dave and I thank you for straighten things up. I have owed a SAT II and I know that the overpull percentage is fixed for that machine (20% throughout or so).  If it is different for the SAT III, I beg you to update my knowledtge on that respect. For example, if both strings each side of the tenor break are 10 cents flat, RCT will raise the wound string by 12% over target pitch, and the lowest plain wire string by 32% over target pitch, because practice tells us that you need different overpull on those strings for an optimal pitch correction.  That's why you have to tell RCT where the lowest plain wire note is before you start tuning.  The overpull percentage varies throuhout the keyboard (as well as the pitch offsets...) depending of the section of the piano, according to statistics made on actual experiments on pitch raises.  And you even have the option to change the overpull percentage chart if you find that a particular piano reacts differently to an overpull. So, for the sake of my own education, I would be grateful you tell me what the variable overpull percentages are on a SAT III and how you tell the machine where the lowest plain wire note is. Regards, Michel Lachance, RPT </BLOCKQUOTE> I believe the overpull is 25% of the 2nd partial. Someone please correct me if I am wrong. (Jim, please pitch in). The SAT 3 is the same. I usually measure the lowest note of the plain wire, offset for pitch raise, and re-measure every octave or so.  I have no problems with doing a pitch raise using this method.   Dave Peake, RPT Portland Chapter Oregon City, OR www.davespianoworks.locality.com</HTML>