The races, from what I recall, were in fact slippery. They looked like they offered a "lip" to catch, but the problem is that the lip is just part of the rounded race. However, although the screwdriver would keep slipping off when I pounded it, I kept at it, and somehow after about a half hour of seemingly useless pounding, it came out. I still don't know how it came out.

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08 W251 R350
97 W210 E320
91 W124 300E
86 W126 560SEL
85 W126 380SE Silver
85 W126 380SE Cranberry
79 W123 250
78 W123 280E
75 W114 280