fiberglass hood pop-up spring question

I have a lift off hood on my bracket car, I put four 2" x 2" x 1" Styrofoam blocks under the holes for the hood pins before I installed my hood scoop. They compressed about a 1/4" & when the pins were pulled there was just enough room to get my fingers under the edge.

that's a great idea,, I was looing for something that I had not considered.