Well the correct one has a bolt that bolts into the IP and then the dogears to turn. I did a fair amount of banging (with only regular hammer though) and didnt have any luck. I guess the 1" socket can work as well.

Any thoughts on used PC? I mean its not a wear item.

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1995 E420 Schwarz
1995 E300 Weiss
#1987 300D Sturmmachine
#1991 300D Nearly Perfect
#1994 E320 Cabriolet
#1995 E320 Touring
#1985 300D Sedan
OBK #42