We might help you gain a few points, but it will not produce restoration wonders. Cheap grease removing cleaners, generously applied, work great, plus you can survive the fumes afterward. After completing Area 6, finish this project with a few quick wisks of carefully shot, lemon pledge. Judges love a clean smelling engine and get point deducting crazy if the aroma is of fried gunk. Sure, it is not a long-term solution, but cleaning off the inevitable gray fingers, may allow you to take home the gold.
Hood latches discolor and mar endlessly.
Spray clean, dry, and then apply your gray paint pen, black one, or manifold dressing. In fact, while you have these handy touch ups out, see how many other nuts, bolts, and latches you can restore to a new look. Next examine the fan blades for discolorment or spots missing paint. Grab your permanent magic marker or paint pen and touch them up. Or if you have time, spray paint the blades.