<HTML>In a message dated 6/28/2002 4:06:28 PM Pacific Standard Time, richard.brekne@grieg.uib.no writes: <BLOCKQUOTE TYPE=CITE style="BORDER-LEFT: #0000ff 2px solid; MARGIN-LEFT: 5px; MARGIN-RIGHT: 0px; PADDING-LEFT: 5px">Subj:Re: Night And Day Date:6/28/2002 4:06:28 PM Pacific Standard Time From:<A HREF="mailto:richard.brekne@grieg.uib.no">richard.brekne@grieg.uib.no</A> Reply-to:<A HREF="mailto:pianotech@ptg.org">pianotech@ptg.org</A> To:<A HREF="mailto:pianotech@ptg.org">pianotech@ptg.org</A> Sent from the Internet Hi Ric</BLOCKQUOTE>    Have also found it necessary to voice deeply in the crown several times as well thru out most of the set to create some sort of more uniform density. I guess steam would cetainly help but I'd stab em too so they don't rebound prematurely to the sound of breaking glass. >>>>>Dale>>>>>>>> <BLOCKQUOTE TYPE=CITE style="BORDER-LEFT: #0000ff 2px solid; MARGIN-LEFT: 5px; MARGIN-RIGHT: 0px; PADDING-LEFT: 5px"> Hi Phil Petrofs are pretty typically pretty zingy sounding instruments. These days you can get either stock Petrof hammers, lots of grey dye soaked in which is supposed to be shoulder support, or you can get them with Renner hammers, and I think they have lots of grey dye soaked in the sides as well...:) Either set are hard to begin with, and get real hard as time goes by. You can needle pretty aggresively from about hammer 70 downwards... but above that you run into the problem you describe below...but one trick is to soften up the middel shoulders...pretty high up on these upper hammers... and then brush across the crown one drop (and only one small drop) of water and immediatly zap it with a hot iron. Seems to last a while and gives a nice sound... plus its forgiving in that if you have gone a bit too far you can count on the hardness coming back sooner or later. I dont know why they dont try other densities.... Ask Ivana :) </BLOCKQUOTE> </HTML>