The 2 that I have bought have ran relatively straight out of the box, but their trim adjusters were turned all the way to the left (looking at the underside of the chassis). I fiddled w/it and found that it was best to leave it where it was. Adjusting it to dead center made the cars run way left. Kinda weird since you would think having the trim set dead center should make the car run straight. Oh well another of those unexplained mysteries of the universe.
