<HTML>List Kimball grand, circa 1930 or so.  Bottom 5 or 6 dampers won't dampen.&= nbsp; They seem to descend slowly...except when lifted by the damper pedal.=   Then, they all plop right down and dampen just fine.  Upon fur= ther examination, I find that if I hold the adjacent dampers away, I can get= any of them to dampen just fine when lifted by the key.  Looks as if = the damper felts are in contact with one another, and when lifted singly, th= e friction from the adjacent damper felt is enough to slow its descent and m= ake it not dampen properly.  These are monochord dampers, and through = the ages, I think they've spread a little.  (It's happening to me...wh= y not a damper felt?) Assuming that this is the proper diagnosis of the problem, what would you re= commend using to narrow the offending damper felts?  Some possibilitie= s in my feeble mind include:      1.  Using sandpaper to file them.      2.  I don't think I could razor blade them ne= atly enough...      3.  Ironing them...?      4.  Squeezing them with a pliers.      5.  Alcohol and a heat gun.      6.  Just a gun.  (Aimed at my right tem= ple. That'll stop those bass strings from ringing!) I'm pretty sure that I've correctly analyzed the problem, but can anyone thi= nk of another reason these dampers will dampen as a group, but not individua= lly?  The damper rod is not holding them too high.  They are not= misaligned.  There is not much follow through, but they dampen fine a= s a group.  There is sufficient lift of the dampers from either the pe= dal or the key.  Thanks in advance for any ideas, suggestions...or guns. Tom Sivak</HTML>