Bulkhead replacement
Danny, I'm in the middle of the same project for the port bulkhead. I have an '82 C27 tall rig. There were some archived articles earlier that helped me. I am assuming you are referring to the wood bulkhead supporting the shroud chainplate that frequently suffers water damage.To remove the bulkhead, I had to unscrew and take out the top of the hanging locker and molding. I then unscrewed and unbolted the damaged bulkhead, including the chainplate. The bulkhead should slide out pretty easily, and you may find that the chainplate is loose from the lack of adhesion through the deck (hence the damage).Your new wood should be 12mm teak plywood. I got one sided plywood because the "bad" side will be the inside of my hanging locker. If your bulkhead is also the inside of your head, you will want two-sided teak. My one-sided teak cost me $170 for a 4' x 8' sheet here in Maine. The double sided costs about $190.Use the old bulkhead as a template, and cut out with a saber saw. Seal the edges with marine epoxy. (I haven't done this part yet, and do not have any recommendations as to type.) The teak will also have to finished (varnished) somehow to match.Hope this helps. If I run into other tips as I finish the job, I'll let you know.