<html><head></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; ">I remember someone saying that Renner bushing cloth was graphited. <div>I do remember some prepared Renner bushing cloth that I got at conventions, was graphited.</div><div>I never had a problem, but some people apparently had sluggish problems, that got worse the more it was played.</div><div>If it were graphited bushing cloth, perhaps there was an interaction with the lubricant used.</div><div>So be sure to check before repinning.</div><div>John Ross</div><div>Windsor, Nova Scotia.<br><div><div>On 2011-07-13, at 8:14 PM, David Weiss wrote:</div><br class="Apple-interchange-newline"><blockquote type="cite"><div>List, <br><br>I received a call to look at a Baldwin baby grand with sluggish action. The<br>piano was rebuilt about 10 years ago, with Renner parts. A Dampp Chaser<br>system was installed at the time of the rebuild. <br><br>About 6 months ago the owner noticed about one octave of sluggish notes. He<br>called another technician who came out and lubricated the jack flanges. It<br>didn't help and more notes started getting sluggish. He called the other<br>tech back, who lubricated again. The owner said after the second round of<br>lubricating the problem was even worse. I don't know what the other tech<br>used to lubricate, but I'm assuming it was Protec. <br><br>I looked at the action today and the jack flanges are really tight. Some<br>notes will play once, other notes will not even play one time, the jack<br>being stuck in the forward position. All the other flanges in the action<br>are fine. <br><br>I'm trying to figure out why this happened. The house is modern with<br>reasonably good climate control. They heat and cool like most people in my<br>area. They don't leave windows open a lot. There have been no unusual<br>events, such as burst pipes, broken air conditioners, etc. The piano has<br>been in the same spot for 10 years, and seems to have been fine for the<br>first 9 years. <br><br>I gave the owner a quote for re-pinning the jack flanges. But two questions<br>linger. If I re-pin, will the problem re-occur; and why did this happen in<br>the first place.<br><br>Thanks for your input,<br><br>David Weiss<br><br><br></div></blockquote></div><br></div></body></html>