The rotor was made to have studs pressed in it to start with, don't worry about it.

You will likely need to open the holes in the hubs to fit the appropriate stud for the rotor, a good time/reason to switch to the later model larger wheel studs.

Grigg

•1951 GMC 250 in the Project Journals
•1948 Chevrolet 6400 - Detroit Diesel 4-53T - Roadranger 10 speed overdrive - 4 wheel disc brakes
•1952 Chevrolet 3800 pickup
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"First, get a clear notion of what you desire to accomplish, and then in all probability you will succeed in doing it..." -Henry Maudslay-