Demon hood hinge issues

Sounds like adjusting to me. If the springs were bad, when you pushed down on the back of the hood, it would likely stay down. I had a similar problem when I put my 69 Barracuda back together about 9 years ago. As I remember, I first adjusted it to get the gaps as good as possible. Then I marked the positions of the bolts with masking tape. Then I had 2 assistants holding up the front of the hood while I pushed down on the back. Then I tightened the bolts. That sort of pivoted the back of the hood down.