@RGV250F3,
I hated to see these same year trucks around town with their hoods bent up in the middle, it was a shame. Unfortunately mine was the same way. It was like that when I bought the truck. I was always pushing the bend and cracks there, down after closing the hood. So when I rebuilt my truck I took the new hood, I had bought from the local Chevy dealer, over to the body man's house where we were going to paint the truck and had him take some .050" thick pieces of sheet metal and we welded them over the crumple zone places, you can see them, to stop the bending. Let me tell you, that hood weighs 96 lbs.!! I know because that was what was on the waybill when I picked it up from the dealer.
Even though the crumple zones are kinda in the middle if you neglect to oil those hinges and they get dry and hang up one time closing the hood, it will bend. And there won't be any kinda pushing on it to straighten it out either. You will have to take it off and do what I had to do and that is get it straight, then weld strips over the crumple zone to keep it from bending again, and if you don't it WILL keep bending. And then you will become "one of those guys"! You don't want that do you?
The maint. book says to use 30 weight motor oil on hinges. Do that! Get a red rag and oil those hinges everywhere it moves. Then you'll have a nice straight hood.