It works fine for me, except that position thing that you already said is going to be fixed. Only thing that puts me a little bit off while driving are rev lights which are not sincronized with those in game. I only managed to get them all light up when I was in neutral and revving my engine to the max.
One thing that would also be great if possible: DRS lights (2 greens in your app). Is it possible to have one light up when DRS is available and 2nd to light up when activated?