The cam levers are locked. They lock in the downwards position. I just purchased another set of these for another Zizzo. For a Zizzo you need the additional 25.4mm split shims on their website and then you will need to make some additional split shims from:

Aluminum Round Tube: 6061, 1 in Outside Dia, 0.035 in Wall Thick, 6 ft Overall Lg, Mill, T6

As I will need to make more of these for the new bars. I will make from a 6 ft piece I purchased.... let me know if you need some and I will make and send to you.