They're both wrong. It should be 0x0000000000000008: (3,1,2). D'oh! I'm embarrassed now. Cheers, Alison (For reference: https://gist.github.com/alis0nc/5639697/f15d28053e2e4762bb6f8c1a3a50cd831e0d83f0#file-my_controller-py )