Question: Can anyone tell me the correct size for the "capstay" turnbuckles on a 1978 Catalina 30? I believe they are 3/8" but I'm not sure. The replacements mentioned on the Catalina Direct site are 5/16", if I'm not mistaken. As I understand it, I can order them from a friend that works at West Marine and return them if they are not the correct size, but I hope to get it right the first time!