I never thought of that one point moving  more than the other.  Very Cool.  I have been playing with that nudge and was not happy with the results.

 What I did was planted last spring and came back and  side dressed and then again this fall and strip till in the middle of the row.  Always seemed one end of the field was off more than the other.  Now with that  said would remarking point A work instead of nudging the line over.  Damn, that was a very good thought!!!!!