no, not really. ask docdave. he's got a lot of stuff in his noggin.

any thoughts on using a 1/4" wheel spacer to eliminate some minimal rubbing

yeah, there are no cv joints on a yj. jack the jeep up so the tires are just off the ground. then grab the tires and shake the heck out of them. have someone help you with this. don't get your whole body under the jeep. while shaking, grab all the rods and such and you should be able to feel the offending part. BE CAREFUL!!!!!!!!