I am putting a phenolic board onto a steel chassis of a head I'm building. I'm looking to elevate this board by about 5/8 of an inch. It's 5 x 13 inches and I have 8, 8-32 studs fairly evenly spaced to attach it. I was going to use some aluminum rod and make some stand-offs, but the piece of rod I have laying around turned out to be larger than I remembered at 1/2 inch diameter. I have different sizes of fuel line and I figured it lives for years under a hood. All the heavy componentry is chassis mounted. I haven't test mounted it yet, which I can do to see how much it moves. Thoughts? alternative suggestions?