I think thats what Im going to have to do whenever I take a long trip....My XJ runs perfect till I hit 70 mph, then vibrates just a bit, probably not enough to damage anything, just annoying. Im about 99.9% sure that the vibe is coming from the double cardan joint there. It dosnt look balanced. I also get a squal until the jeep warms up from that joint...think it needs rebuilt or replaced. I just would rather run that one into the ground before replacing it. Thanks for your help!
Brian