Yesterday I read about the levers opening the Uber Chests, so I went back to lvl 1 and started opening them. The problem is that there are 3 Uber Chests on lvl 1, but only 2 levers. Two will open when the levers are pulled, but the third one won't. I've tried all 4 combinations of the levers as well, but without any luck. I checked the entire level twice to make sure and there really are only two levers. Is this a bug? Or is it linked to a lever on lvl 2 or something?