I would get a ball pein (metalworking) hammer and carefully dent each hole so it sits below the surface, then fill the holes with an epoxy filler (dap or woodwork filler isn't going to work) - a car body filler would be ideal. You fill the holes, spreading and smoothing with a putty knife or scraper, sand, backfill, sand until smooth, prime and paint.

Thank you so much. I think I even have a ball-pein hammer. I will see about getting the car body filler. Wish me luck!

Good advice pjb999 !!!!! I made a similar repair on a steel door using the same technique and used JB Weld....it worked perfect.

I love JB weld but I would have thought it'd sag too much...