I posted this a few weeks back but can't find where it went. My son's 1991 YJ 4.0 5SPD. 31X10.50X15 STOCK jEEP WHEELS. It is too easy to turn like something is not right. tires are good and balanced air pressure correct, all parts underneath old but tight. My son is starting to get worried about driving it. I believe the STEERING GEARBOX IS NEWISH but not sure. What can I look for?