I use a rotary file in a cordless drill because the motion is circular, not up and down like a file, allowing for less of a chance to pull off paint and jab the car. Moreover, I take a stack of business cards or small playing cards and place them between the two painted surfaces around the perimeter of the lid so the two surfaces never touch. The small thickness of a business card will be enough to let the lid open and close also;in addition, by doubling and tripling…… up the cards you can shim things around and tighten it down by yourself. You should be able to egg shape the holes enough to get a good fit. Just bear in mind, they did not fit that well from the factory, and more than likely yours was hit or replaced in another life time