Just opened my kit, first step center diff, it appears to be missing the washer that hold the rubber washer??? Second step I am again missing the metal washer. Third step I am missing the 4 washers that go on the 4 gears???? Was there a design change and the gears have the washers molded in now ? Or I am I just missing something here. Please help I really want to start my build and now I'm confused as to whether I'm missing parts. Looks like I'm missing washers for the front and rear diffs as well. Someone help ! Lol