Don't know if you can tell but he drilled one bolt in from each side, looks like he didn't fully drill through and instead just threaded in a stud with a nylock nut. I guess I could remove these, adjust the legs, then redrill in new spots but I'd be worried I'd either partially hit the existing holes or be so close to them that they'd be weak.
My thought was to adjust them, drill one hole and bolt them in place. Then have them welded around the seam.