I've worked at a few shops and this was never an issue, but when the work gets more detailed and expectations raise you have to find answers and a solution. So on this episode the point of emphasis is wheel crowns. When an aftermarket quarter is stamped there's usually something they do or don't do in the process that causes the area just above the wheel crown to be pushed in and/or wavy. It's very subtle and at times hard to detect unless you are looking for it. So the other day I went out there to look for it and unfortunately found it, so I dealt with it accordingly. This same fix is also a fix for quarters that were hit right on the wheel crown, it will push the crown in as a unit, which causes a long slight dip. The best way to fix those are on a rack with a special pulling tool made for wheel crowns, or you can make one out of a cheap clamp as I did at the shop. Sometimes you don't get the time to do this on a rack or something is already on the rack, so you gotta find other solutions. Anyhow, this technique works well. Enjoy. NOTE: this information wasn't copy and pasted from another site.