Having an issue with a custom job

I created my own livery for my #51 458 GTE and some of the pieces on the sides are asymmetrical. It looks fine when I upload it and in ForzaVista mode, but as soon as I leave and go into free roam or a race, almost all of the work appears either backwards, upside-down or chopped up on the right side of the car. Is this a known issue with this car, or is there anything I can do to fix it?