I took my son and a couple of his friends to teach them how to drive a straight drive in my 79 CJ7. Obviously there was a lot of stalling and jerky starts, but they weren't too bad on it. Unfortunately, now I've got an awful noise and vibration. The vibration happens in all gears and I feel like it you really feel it when you let out the clutch. There is a metal on metal sounding vibration that is significant when you start to get around 30-45 mph. This Jeep has a 304 V8, T-18 transmission mated to a Dana 20 transfer case. You can still hit all gears and shift through the transfer case. I have a video where you can see the excessive vibration and hear the noise. Just need to figure out how to upload... Any clue?