It appears you have a problem with the g code that is being output to the machine to me. If it was just the steel shifting, you wouldn't have double cuts (holes for headlight are present but also another cut is occuring around the outside of the hole. Also, cuts in right side headlight hole look jagged. It is possible to move the material if the torch crashes but I doubt that is your problem at this point. Didn't you watch the machine while it was running?