<HTML>I have a customer who has a Knight console about 40 ye= ars old.  It's in very good condition except the jacks are clicking, es= p. in the middle section.  It appears that some type of material with t= he consistency of damp graham crackers was used on the jack stop rail and th= e material has flaked or fallen off with age.  Other felts/cloths appea= r OK. Any of you-all ever run onto this?  I am guessing that the "graham crac= ker" stuff can be removed without too much problem and some regular felt glu= ed on.  Or is there some other repair available of which I am unaware?<= BR> Many thanks in advance for any insight. Charles Cron</HTML>