Here's a picture of my fork dropout. It has a ridge at the bottom right.

This means I have to unscrew the acorn nut on the QR to get it over the ridge. I mount the fork into the car carrier, and then the wheel into the dropout every time I go riding. I'm thinking of filing it down so I can just open the QR and pull the wheel right off without loosening the nut. Is this a good idea? I would also need to touch up the white paint.