Yep , I have to put the car on the body cart and mount a door for the fit, once I get the fit the door comes off and the inner structure get's tacked in place. Then I'll pull the fender to finish welding it up.
I didn't do that to the 65 satellite and had to make a lot of corrections and slices to fit good. that won't happen again.
I did leave a small piece of the inner support in the edge of the fender for curvature support while I was tacking in the outer skin.