I stripped a mounting screw for my Delta Point Pro, looking for a gunsmith with quick turn around in the Greensboro are or close.
I would cut a hex or straight in the head of that screw with a laser.
Pull that thing out.
It will be harder to replace the screw than remove it.
We are by appointment only.I didn't think you having you do it, you milled the slide for me last year. What are the hours you are open?