Drilled and tapped for 4-40 cap hex machine screws in 2 strategic places where the tabs broke off. Works fine and holds the door tightly closed. Just pointed out that I should use 6-40 screws - will get those in the next day or so.
I did a similar fix to my camera to repair the broken off mode dial.(I bought my camera cheap with a broken mode dial.) I used a 3mm button head screw amd very carefully determined how far it needed to project beyond the knob without damaging the ribbon cable enclosed in the switch below the mode contact flex board.