HELP!...anybody done an SSBC front disc

I just got done putting one side of my SSBC front disc conversion on. I went to put the wheel on and the back of it rubs against the caliper when I tighten the lugs. After I removed the wheel and looked closer at it, the caliper sticks out futher that the rotor base that the wheel bolts against. I looked the diagram all over again and i have everything on correctly. Anybody have any experience here with SSBC ?? thanks