Finished sanding the Door Frame Flange. Trying to get the flange straightened out to be able to accept the McMaster- Carr Door Seals. I think I got it where I want it. I started with an Angle Grinder and a Cutoff Wheel. For the corner curves I used a Oscillating Saw and a Dremel and a Drum Sander on a drill motor. To finish I used the Angle Grinder with a 80 Grit Flapper Whee and my Perma-Grit Sandier. I also flattened the curved lip of the flange by sanding down the high part of the curve. This will help make the door seal lay correctly. It looks like the gap will be right when I trim the door edges to fit within the frame. The doors will be set inward about 1/8 inch from the current fitting position when it's time to do the final edge trimming and setting the door edge gap.