<HTML>Techs, Winter in central California often means sluggishness in pianos, because= many people choose to leave windows open in the vicinity of pianos, just to= let in a little "fresh" air, which is usually quite damp. Went out to yet another house where another Kawai upright had a "sticky = key".  The hammer flange bushing was once again the culprit.  Acco= rding to a response or two I got to my last post, the plastic wasn't the cul= prit.  Since this piano is less than a year old, and the pins aren't co= rroded, I once again tried CLP to determine if it would work on centers in p= lastic parts.   I won't say that it didn't help at all, but the lubricity effect was min= imal, at best.  Inadequate would be a better description.  Nothing= like what CLP does on wood parts(even in funky old instruments that would b= e better off put to sleep).  . I anxiously await my shipment of Goose Juice(and summer!). Dave Stahl</HTML>