I have a 5 speed '98 XJ, and there's is a bolt inside my shifter knob that has started rattling, and it is AWFUL. When I unscrew the knob I can see it, and I can get it to line up with the hole, but when I tilt the knob to screw it back on it just slides out of alignment again. Even when I wiggle the shifter back and forth to check that it's in neutral I can hear it rattle!