I was dreading the thought of hacking up this fender yet again, but it had to be done. And went surprisingly well. I had to cut the notch for the chain. I could have stopped right here at this photo and call it notched but I didn't.
I cut another 3/8" strip out and stuck the rolled edge back on.
Tacked, then welded small sections at a time, grinded down, stretched the metal back out with a body hammer.
Also had to fill in the gap.
All welded up and buffed out with the oribital sander.
Getting close! Only a few more things left to do.