Hey Douglas,
Ken is right.
The HIN of "ZCC34335M81C" seems to be from the 1977 design, is hull 335 and is missing the "R" designation. That design had a long run with over 400 hulls built. Plus, the "34R" has an open transom and a removable vee berth for racing. I attached some pics of the two designs to show some differences.
My list is focused on the later 1989 34/36 model as we try to help each other with solutions to problems common to this specific model. You're welcome to remain a member of our group, but I won't be listing your boat. And much of our correspondence just won't translate to your model as the hull is different, the keel is different, the mast is different, the layout is different, tanks are different, the cockpit is different, etc, etc.
If you haven't already done so, I would suggest you join the much larger email list at: cncphotoalbum.com where you can discuss issues with fellow 34 owners. I've learned a lot from that group over the last twenty years and remain an active supporter. I think if you share your story there, it will draw some positive feedback about the C&C 34 which is loved by many.
Thanks,
Chuck Scheaffer, Resolute HIN: ZZC34R02D990, Annapolis, Md