Lower control arms rubbing on brake rotors

[kasedian]

I have a 1993 C1500. Just finished up replacing both sets of control arms, as well as both brake rotors, wheel bearings, tie rods, center link, sway bar bushings, shocks, etc. Took it in yesterday and had it aligned, and it drives great. Nice and tight. I did notice a rubbing sound as I brought it home. Upon further inspection, I found that the ends of the lower control arms are rubbing on the rotor. What's up with that? Did I assemble something wrong? The control arms are Moog, as well as the rest of the parts. The rotors are AC Delco. Has anyone else had this problem? And what should I do to correct it? Thanks