Well after the Christmas parade my Jeep started making a knocking noise. Almost sounded like my lockright wasnt working properly. I then noticed it would make the knocking noise in every gear except 4th. It got worse and the knocking noise bogs the engine down. Also to further investigate I put the transfer case in Neutral, when I do I hear the knocking. Its was worse under a load but even in gear and with the clutch in I could hear it. Anyone got any ideads? Am i looking at a full rebuild or does this sound like it could be something else?