<HTML>Patrick;      Never in 30 years have I ever experimented on a customers piano. I always try out questionable procedures on junk parts around the shop but thanks anyway.      P.S....today I tried 100% denatured alcohol on very sluggest parts from old upright parts in the shop. It freed them up in a matter of minutes. I lubricated with protec....will check in a few days for final results.      Notice, again......JUNK PARTS. Thanks Tommy Black Decatur, Ala.</HTML>