Thankyou Harpgirl and Bill D.
          The information you've posted has made things a bit more clear to me. I've slowly gathered the things I will need and although it seems a bit overwhelming to me, I'm looking forward to starting.
    The pieces of rubber band for shims make sense and I thankyou for that idea. Looking at things, it appears to me that the noise is made when the chord bar hits the top of its housing. Do you glue the pieces to the underside of the chord bar holder, at each little devided space that separates the chord bars?   It's the standard chord bar on a 15 bar Oscar Schmidt.
               Thanks again,
                         Kathy