Rear quarter lip mods?

I used a hammer and lots of time and patience to fold the lip in on my dart. Don't cut it. The quarter panel is spot welder to the wheel tub on the lip. So if you cut too much off, you'll separate the panels and typically have a wavy panel.

My friend has a fender roller and I've used it on my BMW's with great success. But the darts wheel openings weren't round enough so I don't bother with it.