Re: Changing brake pads
Start there. Take it out and drive it for a bit to build up some heat in the brakes then block the wheels, jack up the rear end and put the transmission in neutral and rotate both rear wheels and see if the suspect wheel has more drag, it should be very noticeable. Recheck your work also to make sure you simply didn't bend a backing plate/dust shield and have it rubbing on the rotor. As far as the rotors go if they're within specs you can always have them machined at a fraction of the cost of new ones.