Just a warning to anybody who swapped their factory D1S bulbs to 6k ones. I checked today to see if they were burning the metal on the inside the housings and they were. Try left some fairly deep burn marks. So I ended up swapping back to the stock bulbs. You guys may want to check yours.
I have a picture but the only thing that I could get in there to take a picture was my phone so it's not very good quality.