Thanks everyone for the help! Really appreciated. The boat is a 1994 Gib Sea 444. Very difficult to find any information about it online. I'm thinking I might just rebuilt and re-bed these portlights, and I'll spend my money on some new hatches, which I know are lewmar. Which leads me to another question...the gasket in the attached photo...is that something that is proprietary to the brand or can I find something generic?