What's happenin fellows? I'm new to the forum, but have been on the jeep scene for quite a few years. I'm no expert, but I have tried a lot of remedies that have fixed a lot of problems.
You said that your jeep pulls hard to one side. Have you checked the brakes, are they dragging? A good way you can tell is if there is a burning smell of heat coming from one of your tires. I have heard people telling me that their caliper wasn't releasing properly and the vehicle would pull to one side. Most of the time either the caliper was damaged or the fluid was low or old.