What kind of lug nuts are everyone running with their Matrix 5's? Centerline's website has a regular acorn and a duplex acorn. I bought the truck with a set of aftermarket wheels and the lug nuts are pretty rough looking. I don't know if they are the the stock ones so I am afraid to bolt on my Matrix 5's using them. I wasn't sure if there was anything I needed to worry about with the taper of the lug nut or if they are all the same. My dad had an aftermarket set of wheels years ago that would not stay tight and he blames it on the lug nuts.