Thank you Don for reply, my hatch looks like it is slightly different on the deck....but I think the idea is the same....I'll give it a try and go from there.
It appears that I have about a 3" piece of trim around the base of the combing part....not too sure how it's connected to the combing.
Here are a few pics of my hatch and combing
I'm going to start gathering materials and start the project in a week or two...weather here isn't the greatest. As you can see I sealed it temporarily with 4000UV...so no more leaking....verified with 3 days of rain!!!!