Here is a picture of a new brake disk. In the picture you can see the two tabs on the disk that I pointed to with red lines. This is a new disk and I have not ground anything on it. What I did with the one in my son's ATX is to grind the corners off of these tabs. This helped, but did not completely fix the binding. I think Dustin7837 clipped the tabs off, and I may end up cutting the tip off to make them work better. I also think Poor Judgement had a similar problem and shortened these tabs to fix it. PJ is who gave me the idea to modify the tabs when I started having problems.