I'm replacing the control arms on my 1999 M3, the bushings are bad and I suspect the ball joints have some slop. I CANNOT figure out how to get the inner ball joint nut off!! There is a metal tube that goes right past the nut on top of it (I think power steering?) and there is some huge THING right next to the nut to the rear that prevents using a box wrench. I don't think I can get a socket down from the top of the engine compartment (though the local service place says this is possible), and I can't use an open ended 21mm wrench down below because there's no place to turn it. Stubbies don't work because there's not enough torque to get the nut undone. What am I missing here?!