Quoted from pinballaddicted:
It is not just you and you are not missing anything. You do not have to remove the bolts to fit the mirrored blades. We have had a couple of sets like that, the hole in the blades is not in the correct position. Get another set from who ever you bought them from.
You DOhave to remove the hinge bolts on AFMr and any bw game. The bolt is what holds the mirror blade to the cabinet. The bolt also sits proud of the cabinet unlike a stern, which sits flush. You are correct that The mirror blades he has appear to be drilled incorrectly.