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Most likely. They should always mark them when taking them apart, but they seldom do.
I alway use a dab of bright paint.
The older Benz has a pin/lock that you inserted into the box to keep it centered/locked for changing and alignment, but very few guys even know about that either.
If all is back where it should be, the SW index mark will line up as it is suposed to. Making up any difference by changing the SW position in comparison to the steering column shaft is incorrect and only mask an incorrect line-up.

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A Dalton