From what I was told by my MB indy mechanic, the U-joint is not supposed to flex in a free range of motion and when it is on the car, the drive shaft is almost completely straight and the U-joint does not hardly flex at all.

There are companies which will sell you a completely rebuilt drive shaft, balanced correctly with the support bearing installed but they are not cheap, $350 and up with a core charge. They will even use a U-joint with grease zerks if you wish.

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"Life is tough...it's even tougher if you're stupid." John Wayne


Dave
Pawleys Island, SC

'79 300CD