Hi folks, I'm looking at buying a 1968 cal 34. The boat has been cruised extensively and is very well equipped. The only thing I have found wrong with the boat other than cosmetics is rusty fittings in the lav area. These are very substantial fittings that attach to the bulkhead. They look to be 1/8 inch thick with large bolts through them and the bulkhead. I can’t see what’s on the other side because they are under the ice box. I’m guessing they are attached to the keel / ballast. Has anyone changed these before and how much trouble will it be to replace them. Thanks, Tim