vicsir

I got finished helping a buddy out with his eg and we had to take off his brakes. the two screws that bolt up to the hub through the rotor...one of them broke off. we put everything back on and used the one screw through the rotor. We went for a test drive and herd this grinding noise.

my buddy and I checked everything over and can't seem to find anything touching each other unless its something with the caliper. I'm stumped and would appreciate some help.

Thanks