I changed the idler arm bushing and rear flex disc wednesday night. I ended up removing the exhaust system since the driveshaft nut was obscured. The idler arm was sooo easy. Tightened it to 150Nm. That information I got from another board while this one was in surgery.

The flex disc was harder. The grease seal that is on the end of the driveshaft was cut up a little and the copper ring inside it had a chunk missing. I put some grease in it and put it back together. So far, the driveshaft hasn't separated from the car at 80mph, pole-faulting it over the center divider into oncoming traffic, knock on wood.

Thanks for the help.

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63 220S W111
76 300D W115
2013 VW JSW TDI M6

previously-
73 280 SEL 4.5
86 300E 5 speed
2010 VW Jetta TDI M6