Also remember that you have up to 6 months to reject the vehicle and request a refund or to replace the car. I would recommend allowing them to carry out what they recommend and if it is not absolutely spot on, then reject it. That is what i did, back in September when my first GTI had paint issues. I rejected the car AFTER they attempted to rectify the issue, they made it worse so i rejected it. I got to keep the GTI until my replacement arrived and i took delivery 1st March.
J