<HTML><BODY BGCOLOR="#ffffff">In a message dated 10/15/02 7:03:02 PM Central Daylight Time, JIMRPT@aol.com writes: <BLOCKQUOTE TYPE=CITE style="BORDER-LEFT: #0000ff 2px solid; MARGIN-LEFT: 5px; MARGIN-RIGHT: 0px; PADDING-LEFT: 5px">In a message dated 15/10/02 6:48:11 PM, Wimblees@aol.com writes: << Some of them are checking, but only on a hard blow. The rest just bobble. New hammers, shanks and flanges. >> Wim check the rep window and make sure the old jacks are clearing the new knuckles..... just a thought.. Jim Bryant (FL) </BLOCKQUOTE> Wim, Jim has a good point and the fact of the matter is there could be lots of reasons.  Rep spring adjustment, loose action frame screws, cracked action rails, tight balancier pins, glazed tails, wrong backcheck height or angle, low damper upstop rail, etc.  I had a major backcheck problem with a "B" Steinway a short while back and even though I spent many hours trying to fix it including calling some high level local technicians to no avail, only recently have I come to a conclusion. David Koelzer Vintage Pianos DFW </HTML>