No exaggeration at all, Frank.  If memory serves, Del once demonstrated under-engineered concert grand key flex by pushing the front of the key ALL the way down to the punching while holding down the back of the key.  Kinda renders all that precision key dip work irrelevant beyond mezzo piano, doesn't it?  (To say nothing of lost energy!) Alan Eder -----Original Message----- From: pianoguru@cox.net To: Pianotech List <pianotech@ptg.org> Sent: Fri, 2 May 2008 5:29 am Subject: Re: Flexy S&S D Keys <div id="AOLMsgPart_0_4e7eea9d-2143-4488-a0aa-3c08745c6dc5" style="margin: 0px; font-family: Tahoma,Verdana,Arial,Sans-Serif; font-size: 12px; color: rgb(0, 0, 0); background-color: rgb(255, 255, 255);"> <pre style="font-size: 9pt;"><tt>---- <a href="mailto:mccleskey112@bellsouth.net">mccleskey112@bellsouth.net</a> wrote: > Hey: I'd like to know how much flex is too much and why just S&S D's? Hi Gerald, ... How much flex is too much? ... If you can hold down the back of the key and press the front of the key halfway through its distance of travel, you definitely have a flexy key! (OK, I'm exaggerating a bit.) Frank Emerson </tt></pre> </div>  <div id='u8CA7A69D13C3CD9-ED4-4AA6' class='aol_ad_footer'><HR style="MARGIN-TOP: 10px">Plan your next roadtrip with <A title="http://www.mapquest.com/?ncid=mpqmap00030000000004" href="http://www.mapquest.com/?ncid=mpqmap00030000000004" target="_blank">MapQuest.com</A>: America's #1 Mapping Site. </div>