Yes, Cass is Dr. Diff. Not saying he doesn't redrill them, I wouldn't be surprised that people complain if they have to carefully slip them on. And tolerances might be that 4 out of 5 fit and one doesn't and by redrilling them he doesn't run the risk of someone posting bad comments on the internet. Could be he just hits them with a 5/8" bit to make sure they are opened up enough, too. Not sure. And Blu said he talked to Cass and that they aren't redrilled, so there is that too.
I'm just saying if the specs match reality, they should be very close to slipping right on. I would buy one locally and try it. If it doesn't work, returns are easy.
Hmm...something else I just thought of. If the knurl on the stud sticks out past the hub face, it could cause the rotor not to seat. I was only looking at the stud itself.