Im in the midst of trying to complete a rear brake job on my dually. Pads and rotors on the rear of my truck. I have one side apart partilally, I have the axle out and the caliper off. I cant losen the rotor to come off. I have loosened the parking brake I think, as she wiggles a little more now. Hammer, sledge hammer, heat, she will not cooperate. Is there something I might be missing on the newer truck that hold the hub/rotor on ? other than maybe a little extra rust????