<html> Hi Roy,             Andre Boldoc sells all the specialty tools and instructions for performing this task efficiently,  If you get a chance to go to one of his classes,  do so it's well worth the effort. Roger At 09:14 PM 8/10/01 -0400, you wrote: <blockquote type=cite cite>I know this might sound a little far out, but is it possible to replace a pin block in an old upright piano without completely tearing the back apart? Also, over the years I have heard that there is a method that entails removing the plate and filling the pin holes with Plexiglas and reboring. Would appreciate hearing from anyone who is familiar with this. I have been rebuilding and restringing old players and regular uprights for many years for customers who want to preserve their grandparents pianos and pass them on to another generation with great success, but once in a while I run into one where oversized pins just don't do the job to my satisfaction, and am looking for a better solution. Replacing the pin block in a grand is pretty well cut and dried, I have done it many times also, but with uprights it is different story. Thanks in advance, Roy Czekay Milwaukee, WI </blockquote> </html>