I seriously doubt that will work to be honest. The half holes in the disc carrier actually ovalise. Installing oversized bobbins isn't going to solve the problem. It will simply bind up the disc. What you need is a new carrier. However, my guess is that Brembo engineered this pretty well. That is this wear is an indicator that it's time to replace the entire disc.
I am sure there are plenty of people who have successfully rebuilt discs, but if you get it wrong...oh dear. Not for me.
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