I just replaced an old Lewmar with a new Ocean series, 70 sized in the salon of my E38. The holes "almost" lined up as Loren indicated but not quite. I turned the hatch 180* so now it opens aft, clear of the vang and mainsheet. I did not through bolt the hatch, I simply reused the same style hardware, screws into the laminate, drilled in fresh holes after filling the old with epoxy. The hinge point does move a bit, even with the large 1/4" screws through the hinge points, its not enough to really pull the flange down solid. My plan is to replace each screw one at a time, counter bore from below for nut/washer clearance, through drill for machine screws, to correct this. The negative is I will have to remove teak interior trim to do this. Bedded in butyl the hatch is leak free and will stay that way as long as I don't open/close it to much, until I get to bolting it.
RT