For anybody that reads this later, frobi refers to "position II", but in the MB service manual world, that is actually position 1.
As the key is first inserted, that is position 0. As it is turned to that first indent where the release wire toll can be inserted, MB calls that position 1.
As the key is first inserted, that is position 0. As it is turned to that first indent where the release wire toll can be inserted, MB calls that position 1.