[pfarah]

I think you are referring to the upper hatch seal (just replaced mine a few months ago). The rubber wing needs to be removed so both hatch pin assemblies need to be removed using a Star bit (6-8mm). There are several countersunk set screws that hold the wing in place although I did remove the buttresses (side rubber pieces) in order to fully clean all surfaces. This will also provide you the opportunity to clear the water passages as well as inspect the condition of the hatch pin seats.