Quarter Fitment Problem

I am in the process of installing a new quarter skin on my 71 Dart project and think that I am hosed!!!! I have the panel tacked all the way around, about an inch apart everywhere except the pinch weld areas around the drop off and outer wheel house. I have about 8 plug welds done in these areas. The problem is that I cannot get the flange on the front edge of the drop-off to mate up with the lip on wheel opening. There is just no way that I can bend, shape or otherwise coerce the drop off to line up to attach it to the wheel well lip. At this time, it looks like about the only option I might have is to bend teh drop off lip down and weld it along the edge rather than on the flat face.

Any ideas, I am desparate and looking for a high window. disgust Thanks.

Jim