D'oh! I thought my ears were ringing!
Actually, I don't know exactly where they'll go, myself, as I have yet to get brave enough to put holes in my armor.
But....individually I plan on hot-gluing (or abs welding) the screws from the inside of the armor, then that will allow me to tighten them from the outside. I also plan on using small rubber washers or maybe those stickers you put on calendar nail holes, to keep the bolts from scratching up the armor.
I even thought: Why do these even HAVE to hold the armor together?? Permanently screw them (so they don't rotate) TO the armor, while using velcro to stick the armor together.:facepalm Maybe cut a radius out of the lower armor, under each screw, so the screw head doesn't cause the armor to "ride up".
It could work.