Replacing SBP Rotors

I realize this is an ancient thread but I have a related (I think) question. I just purchased a pair of new Duralast rotors from my local Auto Zone. I drove the studs out of the hubs to reuse with the new rotors. When I inserted one of the studs through a new rotor however, there seems to be a bit more "slop" between the edge of the hole and the stud than with the old rotors. Is this a matter of concern? Can I get larger studs to fill the gap better? Check out the pic to see what I am talking about.

stud.jpg