<HTML> <HEAD> <TITLE>Re: suddenly, a click</TITLE> </HEAD> <BODY> <BLOCKQUOTE>Just wrapping up working on a YC action that has been in my shop about 4 w= eeks. After assembling it I notice a distinct click when the jacks reset. It= appears some errant chemical vapor from the shop has hardened the jack stop= felt causing a slight noise on the reset.   I’m thinking perhaps a couple drops of water/alcohol/surfactant solut= ion might do the trick to soften the little round piece of felt.  Anybo= dy have any input? </BLOCKQUOTE> If you’re describing what I think you’re describ= ing, this is very common on many Asian actions....and it’s not felt-ha= rdening, but something to do with the jack position being too far back, and = the whippen itself somehow magnifying the “pock” sound that resu= lts when the jacks pops back under the knuckle. Try weakening the repetition springs and reregulating the jack position(a l= ittle farther forward than usual) and height (so the hammer barely mo= ves on a test “wink”) on one note; I believe the noise will dimi= nish or disappear. Hope this helps.... David Andersen </BODY> </HTML>