<HTML><FONT FACE=arial,helvetica><BODY BGCOLOR="#ffffff"><FONT SIZE=2 FAMILY="SANSSERIF" FACE="Century Gothic" LANG="0">Hello All,
<BR>
<BR>I often run into grand pianos with keys rubbing on the keyslip. I have tried
<BR>various methods for repairing the problem, but would like to pick the
<BR>collective minds of the fine folks on this list.
<BR>
<BR>In the past I have tried shimming the keyframe with front rail punchings. I
<BR>have also tried a screw in the keyframe. First I check the strike point on
<BR>note #88. If I can improve the tone by adjusting the cheek block hold downs
<BR>I will.
<BR>
<BR>My problem with shimming is, if the customer wants to use the una corda
<BR>pedal, there is sometimes too much friction for the action to return
<BR>properly. I guess the correct solution (I may be wrong), to this problem is
<BR>to slide the stack forward drill and plug holes. Thus allowing the action to
<BR>"retreat" into the action cavity. Now I have a birdsnest of other problems
<BR>to contend with. Cheek blocks need adjustment, capstans may be too far back
<BR>on whippen heel, checking will be off, possible damper interferance just to
<BR>name a few.
<BR>
<BR>Now you all have run into this problem. I know. Please don't tell me "Well
<BR>I'd just plane off the back of the keyslip" or "a little sanding on the front
<BR>of the keys will do wonders". Those are not the types of responces I am
<BR>willing to entertain, thank you. I also sometimes find a warped keyslip,
<BR>lets deal with that one another day. Lets correct the straight ones first.
<BR>
<BR>This will probably seem like a simple fix type problem we deal with everyday,
<BR>but I am curious about the "correct" fix. If I left out some of the small
<BR>details, use your imagination.
<BR>
<BR>
<BR>Thanks in advance
<BR>
<BR>Mike Bratcher
<BR>
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