John, The address for Mapes is: P O Box 700 Elizabethton, Tennessee 37644-0700 I believe that Ray Chandler has done some study on string breakage. Perhaps he would be willing to share some of his findings if he is lurking. Allan Gilreath Gilreath Piano & Organ Co. Berry College Gilreath@aol.com
This PTG archive page provided courtesy of Moy Piano Service, LLC