I put the Apikol 2-piece rotors on my car almost two years ago. It has been at least 40,000 miles and I'm starting to get a shimmy on hard braking. Looks like it is time to re-ring them. Anyone DIY this one yet. Apikol recommends having them turned after a re-ring. Kind of wondering how necessary that step really might be. Might be time to source those Q5 calipers too.