What have I got backwards? I said that Toyota's alloy wheels are "hubcentric," which in your words, is to say that they "fit snugly on the raised part of the hub" in the vehicle.
I did not say anything about how the wheel is mounted on the GSP9700. I mentioned seating them on the hubs of the vehicle.
Although I understand that Toyota's _steel_ wheels are lugcentric on the vehicle, the originator of this thread said that he had alloy wheels. The alloy wheels I had on my previous 4Runners, and the ones I have now on my Tundra, are hubcentric.
In any event, we agree that it's best to have them balanced by a shop that uses and understands the Hunter GSP9700.