Are you the one who posted on the alt.auto.mercedes? I just replied you in that news group.
Also check power steering pump for leakage and if idle is smooth, I have only owned it from 4 months, bought it without the last 100k km service history, the last owner abused it, it took me 2 months to slowly repair all the problems he left to me, so I really can't speak about the reliability.
99 BMW 540i 6-speed 110K Km
03 SAAB 9-5 wagon 80K Km
92 400E (Sold) 245K km
Still missing the days with the Benz, it kept me busy.