I can confirm the smaller bearings on the one side are correct, as another friend has a set of these exact same wheels bought on the same day as these wheels. I have also found that Record cones are heat treated, the Tipo are not. But otherwise they seem to be interchangeable. I'm betting the cones in my graphites are not the heat treated ones, because those apparently have a tendency to crack! From what I've read, the bearing size, and smaller race, only change where the bearing rides on the cone. The key though, is to get the correct cone that fits inside that smaller dust cover. And that smaller dust cover looks just like the ones on the front wheel, though I have not measured both. I can't use a front hub cone either, as its a 9mm axle!
Skyway really put together a morphodite wheel with this one, thats for sure.