Used both brands and very happy. I know what your saying about the metal clips, I covered the one side with grease, in case metal on metal rubbing. Maybe try using black plastic dip to cover the clip first ? On my 21 Colorado I did not add the screws and clips on the tops, where I would have to also drill new holes. Never an issue and the guards do not move, maybe try only adding fasteners where the existing holes line up.