Except they don't, I've made 2 sets of My own, & fixed a set from Mancini's. They have to be fat in the middle, & taper off to the top of the pedestal, there's no way to wrap flat stock around a shaft & have the same inner & outer radii....it will only contact at the top edges of the pedestals where the shaft pinches them & oil will leak out from under the shaft at each bolt, thin shim not so much, thick shim a shitload.
