<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"> <HTML><HEAD> <META http-equiv=Content-Type content="text/html; = charset=iso-8859-1"> <META content="MSHTML 5.50.4611.1300" name=GENERATOR> <STYLE></STYLE> </HEAD> <BODY bgColor=#ffffff> <DIV><FONT face=Arial size=2>  I had a customer complain about = the touch on their Yamaha grand and discovered that it weighted off at 66 grams at = middle C. When I checked the hammer flange I found that I could only get one = swing, and that the bushings had a black residue on them. Closer inspection showed = that this residue was also on the center pins as well as slightly in the wood = surrounding the bushings. The residue on the pins themselves rubbed = right off, and the pins looked shiny and new without any signs of buildup or = corrosion. I repinned one to normal tolerances and the cloth felt as if it had = normal resiliency, and the downweight dropped by 11 grams. I also found = that the wippen flanges had the same residue, but hadn't seized up the way the = the hammer flanges had. They seemed to be *slightly* on the tight side but still = within normal tolerances (I didn't have my little spring gage with me). The = jack & rep lever bushings were normal bright red cloth, and perfectly free.</FONT></DIV> <DIV><FONT face=Arial size=2>  I have an appointment to return = and repin this action, but before I do I wondered if anyone else has run across = this before. Could this be something that Yamaha did at the factory? = although I've certainly never seen it in their other grands, this is the first S = series grand that I've serviced. The customer bought it used last year and so = doesn't know it's history. Does anyone know of any center pin lubricants that = react in this way? Is the problem likely to return after repinning? The serial # = is: </FONT><FONT face=Arial size=2>U3894763</FONT></DIV> <DIV><FONT face=Arial size=2></FONT> </DIV> <DIV><FONT face=Arial size=2>Thanks, </FONT></DIV> <DIV><FONT face=Arial size=2>Mark Dierauf</FONT></DIV></BODY></HTML>