<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"> <HTML><HEAD> <META http-equiv=Content-Type content="text/html; = charset=iso-8859-1"> <META content="MSHTML 6.00.2900.2769" name=GENERATOR> <STYLE></STYLE> </HEAD> <BODY bgColor=#ffffff> <DIV>Hello-</DIV> <DIV> </DIV> <DIV>Blubbering (double striking) hammers in a vertical are not all = that uncommon, but today I found a cause that I don't remember seeing = before.</DIV> <DIV> </DIV> <DIV>It was a new Baldwin Hamilton studio sized piano. The customer was complaining that several notes in the low tenor area were not = sustaining. When I got there I found that these few notes were double striking and sounding = like they were blocking when played lightly. Actually anything up to a = light/moderate keystroke.</DIV> <DIV> </DIV> <DIV>I checked the position of the let off rail and regulation in = general. So far things looked fine. Moving the key down slowly produced let off at = about 1/8" and there was sufficient key dip for plenty of after touch. Back = checking was fine. I went to the worst one and to satisfy my curiosity, cranked = the button down to where let off was about 1/2". This changed nothing. The = hammer was still bouncing off the top of the jack. Only on a very firm stroke = would everything cycle through as it should. Most of the piano was just fine. = It was these few notes.</DIV> <DIV> </DIV> <DIV>Well, it only took about five minutes to figure it out, but it was = a long five minutes with the customer watching. Anyone want to guess on this = one?</DIV> <DIV> </DIV> <DIV>Dave Bunch</DIV></BODY></HTML>