Has anyone had their rear driveshaft balanced? I had a vibration, so I changed out my u-joints and took the driveshaft to be balanced. Shop said it was bent and would take a lot of weight to balance. I figured that I have dinged it on a few rocks and it must be bent. I got another used one from the boneyard and that one was out of balance also. At this point, I just told them to balance it and I don't care if it takes a lot of weight. Has this ever happened to any one else? Are 60 driveshafts subject to bending easily? I will re-install and post my results after the weekend.