I just got new Continental DWS tires put on my '07 GTI. The tires themselves are really incredible. But I noticed after I had an alignment the car tracks very slightly left when the steering wheel is totally straight. It only seems to do this sometimes, almost like depending on the pavement. I did get a chance to see the printout from the alignment and all specs were green, which I'm assuming means within range. Could the alignment be causing this problem or could it be something else totally? Thanks.