What he said.
The disks on the NXTs (all Flows, I think) have multiple hole patterns and are asymmetrical, so depending on how you bolt them to the board, they can be offset left, right, forward or back. From the picture, it looks like you've got them bolted with a bias to heelside.
I told my kids, "Someday, you'll have kids of your own." One of them said, "So will you."
-- Rodney Dangerfield.