Back to my 88 300 TE. Just getting into Mercedes, so I don't know tha answer to this. When going from park to drive, there it the typical "thud". To me it sounds like a "u-Joint" from the old American cars I used to own. However, not knowing Mercedes, is there a "u-joint" on the drive shaft? If so, great, I can handle that. If not, what is it? Doesn't sound like CV joints, unless that is what it is on the drive shaft. Any ideas?