Hey P5.0---There is no adjustment!  Just holes in the roof panel. I have the same problem on my 80. One of the studs was stripped out in the hinge, so I repaired it by re-tapping the hole to 3/8 16  & using stainless all thread I cut & installed new studs in the hinge.  This also reduced the adjustment available, so maybe in the future I will have to elongate the holes to make the hatch fit.  Mine is just a cosmetic issue as I have a new seal on the hatch & it doesn't leak, so I may just let it hang out--I'm getting too old to worry about the small stuff.  I hope this helps.
                                                   Dick Mathias aka Postalpony