<html><head><meta http-equiv="Content-Type" content="text/html charset=us-ascii"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; ">As the moisture leaves the keys, the wood fibres draw together, making the hole tight on the pin.<div>A person tends to think that as the wood dries 'shrinks' the hole gets bigger, as seems to happen with tuning pins in the winter/dry time.</div><div>I think I am 'thinking' correctly, if not, I am sure I will be corrected.</div><div>I have been wrong before, and will be again.</div><div>John Ross</div><div>Windsor, Nova Scotia.<br><div><div>On 03-09-2012, at 5:25 PM, <a href="mailto:tnrwim@aol.com">tnrwim@aol.com</a> wrote:</div><br class="Apple-interchange-newline"><blockquote type="cite"><font size="2" face="Arial, Helvetica, sans-serif"> <div><font style="background-color: transparent;">Tuned a 40 year old Kimball console on Tuesday last week, 30 cents low.  All the keys were working, except for a few slightly sluggish jacks in the upper register. But after a treating them with Protek, they worked fine. The piano has a DC, but it wasn't plugged in, which I suspected was causing the few jacks to be tight. So I plugged it in, and told the customer to leave it on 24/7, as are all DC in Hawaii, explaining the heat will keep the action from freezing up, </font><font style="background-color: transparent;"></font></div> <div><font style="background-color: transparent;">Got a call on Friday saying the keys are sticking. Went back that evening, and sure enough, about a dozen jacks, hammer butts,and wippen centers were very tight.  I told the customer that it wasn't supposed to work that way, so I unplugged the DC, and told the customer to call me if the keys were still sticking in a couple of days. This morning he called and said all the keys are working. Go figure. </font></div> <div><font style="background-color: transparent;"></font> </div> <div><font style="background-color: transparent;">Any one want to speculate why? </font></div> <div> </div> <div>Wim Blees, RPT</div> <div>Hawaii</div> <div style="clear: both;"> <div> </div> </div> </font></blockquote></div><br></div></body></html>