I have a 69 cal34. It is built like a tank. I changed the gunnel rubber last year and found no cracks in the flanges. Hosing the joint before installing the replacement rubber uncovered no leaks in the hull/deck joint.
The keel is encapsulated. There are no keel bolts. One less thing to worry about.
I have been in the midst of a refit for several years now. My work keeps me away for long periods of time but there is some progress.
Check out the beam beneath the mast. It is a bit of a chore to replace but not the end of the world. I just saw a posting somewhere that suggested the cal 34s built on the east coast had beams made of less that good material. Chain plates are bolted to the bulkheads. You need to check the wood for rotting.
Email me if you have any specific questions.