@aerobod, this is my thoughts too that either the wheel hasn't been machine correctly or the hub. However the wheel does has a small chamfer, but clearly not enough. @ Jonathan, the matting surface of the wheel is bear metal. With regards to the nuts, I don't believe this to be the problem and the wheel is rock solid when bolted on and CC supplied the nuts. @ Dan, I did think about this too, but as the wheel does have a small chamfer already, I can see that there is already a ring around the hubcentric boss that is about halfway (depth wise), which made me think is because of the chamfer that is doesn't go all the way to the face or the hubcentric being too big. If I had to paint the hubcentric boss, I don't think this will give me a true reading due the chamber on the wheel.