The screws basically are on the horizontal plane, a little downward.
Since original screwholes in steel were rusted out, and I did not want to drill all new holes every 4 inches in fiberglass, lifting it and moving it backwards a bit were my solution.
I lifted it from the inside with a hydraulic jack.
I also removed some fiberglass from the bottom lip and on the leading edge to get it to fit tighter up there with less sealant required.
the screws in front are trying to penetrate steel at a ridiculous angle. pretty ineffective.
I now have threaded brass inserts submerged into homemade fiberglass rope ~ 3/4 inch diameter dry, saturated with epoxy along leading edge, and stainless pan head bolts pulling roof down tightly over windshield.
Ridiculously strong