Trying to change brakes and rotors on 2001 viper with ABS. Cant seem to get the calipers and rotors apart on the driver rear side due to the rotors having a lip on the outer edge and not being able to spread the calipers apart. The e brake works together with the car brakes so the brake piston has to be rotated as you push it back in. Unlike the pre 2001 vipers I'm unable to take the pads out with the rotor in place there is no pin. Anybody know how? Alex.