That bolt was loose. I wouldn't have thought of a bolt comming loose after 222,222 miles (should have taken a picture of that). I'd have eventually found it, when I had the transmission out.

It did take me most of an hour to tighten it, not much room and not much light. I was having a problem getting the allen in, so I had a look with an inspection mirror and it looks like somebody had been there before

I bought a Mercedes knowing there was lots of support, especially here in So Cal. But my fear was with a unique standard transmission, which are as rare as Peugeots, so I was sweating bullets when I changed all the bushings and it was still having problems.

Thanks again M. B. Doc

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5 speed '91 190E 2.6 320,000 mi. (new car, fast, smooth as silk six, couldn't find any more Peugeots)
5 speed '85 Peugeot 505 2.5l Turbo Diesel 266,000 mi. (old car, fast for a diesel, had 2 others)
5 speed '01 Jetta V6 (new wifes car, pretty quick)
5 speed '85 Peugeot 505 2.2l Turbo Gas 197,000 mi. (wifes car, faster, sadly gone just short of 200k )
5 speed '83 Yamaha 750 Maxim 14,000 mi. (fastest)
0 speed 4' x 8' 1800 lb Harbor Freight utility trailer (only as fast as what's pulling it)