Newbie here so TIA. I have a 2004 TJ and just like most I am trying to keep up with maintenance and prioritize repairs. 134k on clock and us in very good condition. My concern is the engine mounts. Should they be replaced just as a precaution? I have one top bolt that is sheared and I am planning on extracting and replacing it. Are there some real "signs" I should look for that will be obvious for needing to replacing mounts or if they ain't broke why fix it come into play here?