
I've just reminded myself precisely what the fastening is on the hinge and
of course it's a pair of nuts holding the hinge 'box' on either side not Torx
as I mention earlier. The Service net illustration shows how the hinges pin
into the roof (item 2) locating the tailgate even after their fastening nuts
(item 79) are removed (IIRC 10mm). I'd leave item 4 well alone! There is
a large spreader washer (item 5) that needs to be prevented for dropping
into the roof box section.
Andrew