hatch friction hinge size on bav 33c 2006

[Diverphil1]

hi all, i have a leak coming from the hinge whare it bolts through the Perspex and down to drip on the bunk.
there looks to be 2 sizes of gaskets to fit different sizes of hinge, both similar shapes but slightly differing dimensions, does anyone out there know what size/type the hatch is so i can get the correct gasket for it.
its on a 2006 bav 33 cruiser.
thanks
phil