Dear collaborators, I have updated document 1077 with studies of light guide transmission through more configurations. The text is also slightly updated, but is still very much a draft. Cheers, Elton. Elton Smith Jefferson Lab MS 12H5 12000 Jefferson Ave Suite # 16 Newport News, VA 23606 elton@jlab.org (757) 269-7625 (757) 269-6331 fax