I generally get the clunk when turning the wheel in conditions where the road and thus wheel height changes... Something like pulling up into a driveway apron or things like that. Sometimes speedbumps do it to. That said it is very intermittent. From my other thread, it seems most think my UCA is letting my DS wheel go out too much on the top...

__________________
Current Diesels:
1981 240D (73K)
1982 300CD (169k)
1985 190D (169k)
1991 350SD (116k)
1991 350SD (206k)
1991 300D (228k)
2008 ML320 CDI (199k)
1996 Dodge Ram CTD (442k)
1996 Dodge Ram CTD (267k)

Past Diesels:
1983 300D (228K), 1985 300D (233K), 1993 300D 2.5T (338k), 1993 300SD (291k)