Embarrasing mistake-need suggestions

[85Ram50]

Bad news the flat spots (which are in the same place as the stiffener) were still in it when I removed the mould. I had a message from Mike on ebay, says he has a used one good shape $160 shipped. Hopefully he responds soon. Ebay didn't tell me I had his message. I gotta figure its cheaper than paying someone to fix it. I just don't have the tools or the a way to clamp the whole fender still so I could hammer out the flat spots with the right hammers and dobe blocks.
EDIT- I just messed with it some more and its definitely the stiffener that is out of shape. IDK how to fix that or if I can get a new one to save this fender for someone else. I can put it in and hold it in shape but once I let go or hold it with a bolt at top and bottom the stiffener pulls it back out of shape. If anyone knows where to get a stiffener let me know.