Does anyone here know how to remove the plastic guard that blocks the air from getting in the hood scoop? There are 4 screws holding it in place, but there must be a trick to removing them. They have a sort of feature that prevents them from being turned out. You can tighten them, but not loosen them. Am I missign something? I want to remove it so that I can build a custom collector to feed air to my AEM intake.