Gray Portlights
Assuming that you have the Gray (brand, not color) portlites, You are correct, you need to CAREFULLY remove the trim rings on the outside. They can get brittle with age. I used a wide, thin puddy knife. Others have used a thin wire.... Once you have the trim rings off, then unscrew from the inside. Make sure that you seal the cutouts to prevent future (or additional) water damage to the plywood core of the cabin top. Check the photo archives, there are some good pictures that have been posted.Chuck PettyS/V Following Sea1984 H27