im trying to...but i cant get his damned vault open! lol

i even went to a walkthrough site where it told me i had to have the levers in this position (ps - NW = northwest, SE = southeast, etc)

center - up

NW - up

NE - down

SW - down

SE - up

and then it says switch the center lever down.

i do that, but the vault doesnt open...

...little help?