I have a funny feeling you aren't going to like this answer, but to be frank, the pad placement on the rotor that you took issue with isn't of any concern. Without getting too bogged down in specific examples, there are even cases where a little bit of pad overhang or having the pad undercut on the rotor is an intentional part of the design of a particular big brake kit. Our Brembo rotor upgrade kit for ND is a good example; it HAS to be that way or it would not work.
Furthermore, it's not uncommon to have some variation in the placement of the friction material on the pad backing plate, or in the shape of the friction material. We've see this variation between different pad manufacturers, and even from one set of pads to the next from the same manufacturer. So one set of pads may line the friction material up with the outer radius of the rotor real nice, and the next set may be off a bit.
The point is, the pads will operate just fine in both of your pictures. You didn't need to "fix" the bracket.
As for the interior chamfer on the hats, that's something that does matter; obviously the hat must sit flat on the hub. However, most reports we get that say the hat isn't fitting on the hub, the culprit is actually that they have corrosion or debris on the hub that isn't allowing things to sit flush. I can't speak for V8R, and perhaps they had a batch of hats where the chamfer was cut wrong, I don't know. But... their hats have been fit to many NCs without issue.
The saying goes "when you have a hammer, every problem looks like a nail" and it looks like because you had access to machining abilities you went straight to "solving" things with machining to adjust, and if that got things working for you then great, but perhaps none of that was really necessary.