<DIV><FONT face=Arial>Hi Barb,</FONT></DIV> <DIV> </DIV> <DIV>I've worked on three Samick and one Young Chang action with seized action centers this past year. The Samicks had a black yuck in the bushing cloth and the Young Chang pins were scratched, probably from being pinned too tight. Both manufacturers recommended shrinking the bushing cloth with 50/50 alcohol and water, then heat it up with a heat gun, exercise the joint, and "voila!" they magically loosen up. They also recommended lubing with Protek while the parts are still warm.</DIV> <DIV> </DIV> <DIV>At this point, let your conscience be your guide. At a minimum, the hammer shanks/flanges will need repinning, and you may find a few wippens or jacks that don't loosen up quite enough. When I repinned these, I tended to favor the loose side of 5-7 swings. The felt is as firm as it ever will be, and if the nasties reappear, lowering the friction will increase repair longevity. On the Samicks, I had to pull the Damper tray and treat the underlevers. On the Young Chang, I didn't.</DIV> <DIV> </DIV> <DIV>You didn't say the piano is a grand...I'm thinking you aren't tall enough to work on uprights, are you?</DIV> <DIV> </DIV> <DIV>Dave Davis</DIV> <DIV> </DIV> <DIV> </DIV> <DIV><FONT face=Arial></FONT> </DIV> <DIV><FONT face=Arial>Hi all,</FONT></DIV> <DIV> <DIV><FONT face=Arial></FONT> </DIV> <DIV><FONT face=Arial>So, what's the scoop on these various parts that have seized up (graphite or whatever causing it) and then have been repinned.  Will they tighten up again?  </FONT></DIV> <DIV><FONT face=Arial></FONT> </DIV> <DIV><FONT face=Arial>I'd like to donate some work to a worthy cause and would like to "recycle" repinned & slightly modified parts (the only way I can afford to donate the job).  </FONT></DIV> <DIV><FONT face=Arial></FONT> </DIV> <DIV><FONT face=Arial>Thanks,</FONT></DIV> <DIV><FONT face=Arial></FONT> </DIV> <DIV><FONT face=Arial>Barbara Richmond, RPT</FONT></DIV></XBODY></DIV>