Agreed. There should not be a lip if used properly. However..ive seen it quite a bit.
Could have had a rookie on this particular job, hence the time taken to complete.
You and I know about the holes in the rotor, not the majority apparently.
I have seen on some vehicles when they roll into my shop that we have difficulties removing the rear rotors. Reason for it is sometimes you get a lip worn on the inside where the e-brake shoes ride. Only way to remove the rotor is to back off the e-brake shoes. Which for someone who does not...