The steering angle - so when you turn the front wheel all the way one direction you are hoping to get it to turn a sharper angle. That's not easily done. As MyLittleCJ5 mentioned you could try to adjust the steering stops. These threaded stops prevent the steering knuckle from turning too far. You want to be careful. The factory knows how far the jeep can steer better than you. Turn the wheel as far as possible and see if the tire has more room before hitting the leaf spring. If there is room you might be able to adjust the stop a little.