It took a little bit of time but got it working as they should once I got the pins aligned up good. Not the best designee.Sorry I'm late to the party,
Be sure the hubs are properly assembled. The four pins you see "fit" into four holes in the bottom of the hub body. The hub will assemble and the dial will rotate regardless of where the pins are, but if the pins aren't aligned with the holes, the hub won't lock.




