Every time I press the brakes i hear this (Thud, thud, thud) sound, But its coming for the rear right drum. I have not brought in my car when the called for that recall on most new Elantra's. The recall was positioning the rear brake lines. Could this be why my car is making this sound. Oh yeah, i Changes all the pad and rotors on my car 4 months ago also the drums. Any ideas.