<HTML> <HEAD> <TITLE>Re: bobble heads rule(r)</TITLE> </HEAD> <BODY> Wim, before you go any further, try this.  Take one hammer near the mi= ddle of the piano and turn down the drop screw as far as it will go.  N= ext, set the let-off on that note.  Now re-set the drop.  I've had= this situation before and this was the solution.   Now do the res= t of the regulation steps. Ted Simmons Merritt Island, FL <BLOCKQUOTE> From: Wimblees@aol.com Reply-To: College and University Technicians <caut@ptg.org><BR= > Date: Wed, 16 Oct 2002 13:47:04 EDT To: Pianotech@PTG.org, caut@ptg.org Subject: bobble heads rule(r) </BLOCKQUOTE> <BLOCKQUOTE>Thanks to all that offered ad= vice on solving my problem First a couple of observations. These are new hammers shanks & flanges, but I didn't hang them. I had previously shaped the tails On the first four notes in the treble, I roughed the tails, filed down the = edges of the tail, and reset the back checks, making the rake more "fla= t," I also allowed the hammer to check lower and reduced the rep spring= . That helped some, but not enough. I looked at some of the other suggestion= s, but none really seem to apply. Out of the piano, the action behaves perfe= ctly. But once it is in the piano the bobbling problem doesn't go away. Finally I took some measurements, and maybe this is the problem. What is su= pposed to be the distance from the center pin to the end of the hammer? Here is what I found. note 1      5 1/4 note 26       5 1/8 note 27       5 3/16 note 41     5 1/4 note 54       5 7/32 note 55     5 9/32 note 72     5 1/4 (As I said, I didn't hang these hammers, and neither did Steinway) Can any one tell me if these measurements are related to the problem? Wim </BLOCKQUOTE> </BODY> </HTML>