Just grabbed a satin-finish white ("ash-blonde" according to the Mrs) 659. Loving her; she's restricted (for now) but I'm not so that'll change soon. Looking forward to learning from the more Ducati-experienced out there
Restricted to learner-legal power outputs; there's either an alloy block or a small plate (depending upon VIN series) attached to the outside of the throttle body. It stops the cam actuated by the throttle cable from turning all the way around. It's just a mechanical block. Undoing that release roughly 20bhp.