I don't believe my rotor is sitting perfectly in the axis that it should be. Even after I tighten the lug bolts, the rotor still scrapes slightly unevenly.
I found this nicely written article about brakes. I'm going to buy a brake runout gauge and measure it. And get some brake alignment shims if needed.
http://www.hendonpub.com/resources/a...etails?id=1787