Only one of the circles on the charger matters (I'm at the office now so I can't check it). It's actually really easy to clean that off with your finger, and t

Only one of the circles on the charger matters (I'm at the office now so I can't check it). It's actually really easy to clean that off with your finger, and that's the only thing that matters in terms of holding it on. It's still a bad design, but once I figured that out it was useable again.