Adrian....I wasnt aware that you guys were cutting 2 mm of the top of the hubs. I have been running this for about a month now and like it. I only ran it in the front and it did offer more traction when using the upper hole and slightly less traction when going to the lower hole. This weekend I will try it in the rear as well. Thanks to the loong weekend I get to practice and race 3 days if I want so this will give me a chance to test this out. I will let you know what I see with the mod in the rear as well.