Argus, I have a 240d so I brought the starter straight up... after corralling the wires...
Much different from a 5 cylinder with a turbo in the way...
I long ago placed pictures in the archivess of the INSIDE of my starter ... it shows where the starter can get this " sometimes" I want to work attitude... on mine three screws had gotten loose in the end... the postmortem showed arcing tracks... this was the one left over after I accidentally ran into an already rebuilt one sitting at the old fashioned Ag electrical repair shop which actually let me stand there and see them take it apart and then take it home...