<HTML>Don, It was a matter of curiosity to me.  I sincerely love working on Ka= wai products, because of their consistency and ease of tuning.  I work = on more of them than any other kind of piano; it's only logical that I will = run across a problem once in a while. I will cease attempting shortcuts when I deal with this problem.  I= 've burnished and/or repinned in the past, and never had a problem afterward= .   I will deal with it that way in the future.  No magic pot= ions or elixirs for the long term, I guess... Thanks for the response, Dave In a message dated 2/8/03 9:26:27 AM Pacific Standard Time, donmannino@a= ttbi.com writes: <BLOCKQUOTE TYPE=CITE style="BORDER-LEFT: #0000ff 2px solid; MARGIN-= LEFT: 5px; MARGIN-RIGHT: 0px; PADDING-LEFT: 5px">Subj:Re: More plastic vs= . CLP Date:2/8/03 9:26:27 AM Pacific Standard Time From:    donmannino@attbi.com (Donald Mannino) Sender:    pianotech-bounces@ptg.org Reply-to:    pianotech@ptg.org (Pianotech) To:    pianotech@ptg.org (Pianotech) Dave, The plastic has nothing to do with the difference in your experiences, D= ave.  The root cause for the sluggishness will explain what you have fo= und.  Most likely, the wood parts you have dealt with have had poor qua= lity bushings that were never fit well, so some lubrication will get you out= of trouble.  The Kawai actions will have high quality bushing cloth th= at were originally fit properly, but there is something else wrong causing t= he centers to tighten up.  Humidity alone should not do this, unless th= ey are literally soaked with water. You should not put lubricants on these parts - it generally does more da= mage than good, and does not really address the problem.  If the part i= s tight, it should be repinned for proper fit. If you think the piano is in warranty, you should call one of us at the = Kawai office with the serial number to check.  Again, a little draftine= ss and dampness will not cause action parts to go this tight - there is some= thing else going on, and by trying to use a quick fix you are not diagnosing= it.  Do not lubricate it while the warranty is in effect, as this coul= d very likely make you responsible for the action warranty from there on! Kawai action centers very become overly tight from humidity - if anythin= g, they tend to be a little on the loose side in dry climates.  Well fi= t cloth bushings and polished center pins do not need any lubrication to wor= k properly.  When you run into this, take an offending part out, take t= he pin out, burnish and install a new pin. It will be permanently fixed.</BL= OCKQUOTE> </HTML>