Can someone, or many someones, send me in a direction of "Things to try" to get these miters in? Part is sheet metal, which admittedly I'm not great with. Pictures attached. Any help would be appreciated.
The surfaces are not perp to each other and are all at different angles. That means the flanges are all coming off at different angles. For instance in the first picture the flange on the left is 90 degrees. The one on the right is at 135 degrees and could probably be at any angle and length necessary to match and or get a miter to work.