I just recently had the front end on my truck redone. New tie rod ends, new u joints, new ball joints, new steering stabilizer, alignment, and everything else checked out. The shop was trying to balance the tires (its a dually) and no luck. 2 shops have tried, no luck. They say the fronts are good, but the rears almost shake the truck off the jack stands. The last shop tried balancing with the wheels on the truck, and even shaved the tires to even them out. Still a real bad shake at 65mph. It vibrates the passenger seat and steering wheel something fierce. Problem is, it happens 1/2 the time. The other half of the time its smooth as can be. By that I mean I can go out in the morning one day, and no vibration, that afternoon, its there again. Vise versa the next day. Its driving me nuts, and getting expensive. Any ideas?