Just my 2 cents...

In the real plane - having a course that is different than the actual ILS course is read by the system as a crosswind. That should not cause the plane to not be on the center line at touchdown since the needle being centered is what controls the alignment. You could have a slight heading difference since the computer would thing there is a slight crosswind.

Does the plane complete the auto-land approach and land on the runway, or does it try to land off the runway?

All the auto-lands I have done with the CS-757 have been fine.

Note: I have NOT up-dated the FAA database to current magnetic variation, but left the original FSX data as it was. I am still using the old version of the CS-757.

Lou