I started to remove the portlights today and found the task a little more daunting than I thought. After removing all the screws securing a metal piece of trim to the inside frame of the portlight along with a piece of weather stripping that fit inside a track around the inner frame, I was greeted with a black rubbery like stuff all around the outside of the inner frame. I was able to peel most of it off in strips. I tried to push the frame to see if it would move out but it did not. The window pane is glass. On the outside there is also a metal trim that I was able to pry away from the hull but it does not want to come loose from the window pane. I cannot figure out what to do next. Any help would be appreciated.