Moser 60 and Wilwood 14"

[G_T]

Folks, ran into an issue during mock up and I'm looking for some suggestions on how to best remedy it. The rear wilwood rotors do not fully seat on the axle flange. Upon close examination - it appears the the shoulder of the axle studs are wider than the threads, so the rotor/hat hangs on them preventing them from fully seating. I see 3 options:

1) Have new/different axle studs pressed in. (PITA)
2) Put 1/4" spacers in. (Don't like this option at all)
3) Machine the stud holes on the hat.

I'd prefer #3. I am disappointed that you drop this much coin on these (guareenteed to fit) parts and they don't fit together...guess it goes with the territory.

It appears that the rotors are hub centric - they fit snuggly. Would it be an issue to throw the hats on my drill press and open up (or rather chamfer) the axle stud holes slightly?