Does it pull only when braking? If so, you still have a brake issue. If it pulls all the time, you have an alignment issue.
If you have a sticking caliper, it will pull in the direction of the questionable caliper.
Do both rotors have about the same thickness as well as about the same finish?
When you installed the new pads, did you have any trouble getting the piston to retract. If so, you may need to overhaul or replace the caliper. If not, did you pull the caliper slide pins for inspection and lubrication? Although a bit unusual, a restricted brake hose can cause a pull. Usually the pull will be oposite the questionable hose. If hoses need to be replaced, I prefer to do them in pairs.
Extremely rare, but some types of master cylinder failure can cause a pull. In our cars, it is even less likely because we have diagonal braking. That is on half of the master does one front and the opposite rear and the other half does the remaining. Still in the area of hydraulics, look for a kinked or bent steel brake line.
Rarely, a brake pull can be caused by worn suspension, such as worn lower control arm bushings or ball joints, or even more rarely from worn tie rod ends.
