Initial set up will have been done before the inner had stretched and before the outer was properly seated in ferrules/ferrules seated in frame.
I always check mine immediately after doing anything with the cable (i.e. wheel removal where you've disconnected and reconnected the cable) and then again a few days later.
If you've ridden it to work etc, do it before you ride home. 2mm out sounds like a lot to me. I don't ride mine unless the edges of each dot are aligned.
Initial set up will have been done before the inner had stretched and before the outer was properly seated in ferrules/ferrules seated in frame.
I always check mine immediately after doing anything with the cable (i.e. wheel removal where you've disconnected and reconnected the cable) and then again a few days later.
If you've ridden it to work etc, do it before you ride home. 2mm out sounds like a lot to me. I don't ride mine unless the edges of each dot are aligned.