<font color='navy' size='2' face='Comic Sans MS, sans-serif'><font color="#000080" face="Comic Sans MS, sans-serif" size="2">David</font> <div><font color="#000080" face="Comic Sans MS, sans-serif" size="2"> I have a 1905 German O with spruce key wood that shows the leads to be slowly corroding and possibly expanding. In this country the N.Y.Stwy keys has </font><font color="#000080" face="Comic Sans MS, sans-serif">always</font><font color="#000080" face="Comic Sans MS, sans-serif" size="2"> been made of Calif. sugar pine and I have not seen lead issues in this wood</font><br> <br> <div style="color: navy; font-family: 'Comic Sans MS', sans-serif; font-size: 10pt; clear: both;"><font size="1" color="royalblue"><b><font face="Georgia, Times New Roman, Times, Serif"><font color="black"><font color="mediumblue" face="Comic Sans MS, sans-serif">Dale Erwin R.P.T.<br> <font color="green">Erwin's Piano Restoration Inc.</font><br> </font></font></font></b></font><font color="darkgreen"><span style="font-style: italic;"><b><font size="1"><font size="1" color="black"><font color="blueviolet"><font color="black"><font color="black" face="Comic Sans MS, sans-serif">Mason & Hamlin</font><font face="Comic Sans MS, sans-serif">/Steinway/</font><font color="black" face="Comic Sans MS, sans-serif">U.S. pianos</font><font face="Comic Sans MS, sans-serif"><br> </font></font></font></font><font size="1" color="cornflowerblue" face="Comic Sans MS, sans-serif">www.Erwinspiano.com</font><font size="1"><br> </font><font size="1" color="crimson" face="Comic Sans MS, sans-serif">Phone: 209-577-8397</font></font></b></span></font></div> <div style="color: navy; font-family: 'Comic Sans MS', sans-serif; font-size: 10pt; clear: both;"><br> </div> <div style="color: black; font-family: arial, helvetica; font-size: 10pt;"> <div id="AOLMsgPart_1_5ed4dd18-4df6-461c-8d6d-26706ade01f4"><font color="black" size="2" face="Arial, Helvetica, sans-serif"> <div style="color: black; font-family: arial,helvetica; font-size: 10pt;"> <div style="margin: 0px; color: rgb(0, 0, 0); font-family: Tahoma, Verdana, Arial, Sans-Serif; font-size: 12px; background-color: rgb(255, 255, 255);" id="AOLMsgPart_0_0e93085f-8284-4d7d-956f-570771ecd3c4"> <pre style="font-size: 9pt;"><tt>While I have run into expanding lead problems periodically generally they seem to have been reserved for "lesser" pianos. Today I found a 1950's Boesendorfer 200 with leads expanding both in the back action and the keys to the extent that they were binding on their neighbors and on the verge of splitting things. Of course I will have to remove and replace, a large task considering the new weigh-off at the key end that will be required. My question is what is it that causes that reaction and why after such a time does it happen. This is some 60 years later. David Love <a target="_blank" href="http://www.davidlovepianos.com">www.davidlovepianos.com</a> </tt></pre> </div> </div> </font> </div>  </div> </div> </font>