I always stay between the center and the mark above with the ILS. Plus, my cockpit view is slightly lower than normal because of my modified 777 file, so I look more straight ahead. It's definitely not the case of eye position.
It's not like I flare more than 5 degrees. What i mean is that I sometimes have to force more input to get to that 5 degrees with the 777 than i would in the other aircraft like the 747. It's just how the plane's physics is in the game.
If you modified the 777 then this explains why it may fly differently. Did the last Steam update correctly change the b777.tmd file and overwrite all of your changes as is should or was the file blocked by your manual changes perhaps?