Make a note of the fact that these 1.2 mm screws are different than the other 1.2 mm ones used elsewhere in this procedure. These 4 seem to have a different thread and a flat/countersunk head. The other two removed previously have a flat/pan head. They are not interchangeable. If you do get them mixed up it’s easy enough to tell them apart if you put them thread up on your work surface which should probably be a tray of some sort. The pan head ones will reflect light at you, the countersunk head ones won’t.