I recently replaced all 6 u-joints on my car as part of the `if its not broke, i should break it` phase of finding and fixing stuff on my car. To make matters worse I'm beginning to suspect that the driveshaft / half shafts are "out of phase" because I did not make any markings or keep track of the yoke orientation on any of the shafts when I assembled them. Is my only real option to get everything balanced? I feel and hear vibrations when at highway speeds.. I dont think figuring out the phase