my friend and I just installed new rotors and pads on the rear. Had a really hard time getting the right rear side rotor on and off, but had no issue with the left side. Now there is a squeaking rotational noise coming from what I think is the right rear side. I can only hear it when going slow (under 60km/h) and when the car isn't completely warmed up. It's there whether im off the brake, on the gas, or on the brakes. I'm thinking it might be the e-brake shoe rubbing against the rotor. Anyone have this happen to them or know what's going on? The sound is driving me nuts.