I had a little bit of water intrusion under the aft edge of the galley hatch, so I added a strip of 3/4″ wide X 3/16″ thick weather seal along the inside of the hatch. there was a faint mark on the inside of the hatch from the molded rubber gasket so I was able to place the weather seal in the proper location. I closed the hatch for a few minutes and then checked the weather seal to make sure there was an impression from the molded gasket. there were a couple of places where there was no impression so I added another short layer of the 3/16 weather seal.