Hello jhcavalla, Great boats those Oday 30s. We owned a '79 K/CB model that we sold about 4 years ago. We rebedded the fixed ports too, but I don't remember having any particular trouble with the frames. I do remember using liquid soap around the cabin side beyond where the frame ended. That kept the caulk from adhering and smearing out beyond where it was useful.
However, on an Irwin 31 (coincidentally named Seahorse) we built wooden frames to surround the fixed ports. The wooden frames followed the contour of the port and overlapped both the cabin side and the plastic of the port. Bedding those frames well ended the concern about leaking ports on that boat. The frames were attached by thru bolts on the cabin side. If that sounds like a project that you would like to know more about, send me a reply using the Private Message option, and I will explain more clearly what I did.