Susan/Joe Goss, et al If the coil of the hammer butt spring is touching the edge of the "route" on the rail, it can make an awful sound. No amount of lubrication will fix it, IMHO. The fix, oft-times is to put another spring in and make sure that it is seated FIRMLY on the "route" surface. Sometimes even this will not make it go away. That's why some manufacturers put felt between the coil and the wood. Unfortunately, the felt can cause other problems. Case in point, the Everett Console of the 70's Best Regards, Joe Garrett, RPT, (Oregon) Been There, Didn't Like It, So I'm Here To Stay! [G}
This PTG archive page provided courtesy of Moy Piano Service, LLC