I was wondering if anyone knows how the backstay chainplate is installed on an E-35 II. It looks to me that it is glassed in place without through bolts. Has anyone had trouble with this installation and has anyone through bolted the chainplate. I ask this because I see some stress fractures and blistering on my transom in the chainplate area. The boat is a 1972 model and otherwise in good shape. Any information about this would be most appreciated. Thanks, cduer