<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"> <html> <head> <META HTTP-EQUIV="Content-Type" CONTENT="text/html; = charset=us-ascii"> <meta name=Generator content="Microsoft Word 10 (filtered)"> <style>  </style> </head> <body bgcolor=white lang=EN-US link=blue vlink=purple> <div class=Section1>     -----Original = Message----- From: = pianotech-bounces@ptg.org [mailto:pianotech-bounces@ptg.org] On Behalf Of Bill Maxim Sent: Tuesday, April 29, 2003 9:31 = PM To: Pianotech Subject: Today's = Puzzler   <div> List, </div> <div>   </div> <div> Servicing a geriatric = Chickering concert grand today, D4 had a rattle somewhere in the action that = sounded like metal on wood.  I was in the process of regulating backchecks and = noted that the backcheck wire was loose in the key, so I fixed that with thin = CA glue.  The rattle persisted and seemed to be coming from the top = action, so I pulled the wippen.  There was no rattle in the key, the = capstan was tight, and everything appeared tight in the wippen, even when banging it = on the table.  What was causing the noise? </div> <div>   </div> <div> Bill = Maxim       =             =      Hard punching on the jack regulating button ,or loose spoon contacting = the aforementioned button?       =       Also on a smaller Chickering I had a loose screw mounting the damper action. = This was a machine screw with a washer and was more of a metallic sound than = what you describe and vibrated on only one note. Took me hours to = find!       =       Tom Driscoll </div> </div> </body> </html>