Konica Auto S2 cleaning.

Hello,
I have recently purchased a working Konica Auto S2,(it even has a working mercury battery), but I'm having a difficult time figuring out how to remove the top for cleaning the rangefinder from the inside. I have some experience in cleaning rangefinders (Retinas, Yashica Lynx and Minister) but how does one remove the film advance lever on this model?

Any help would be appreciated.

Thanks.
Chris

Ok, so I'm a little tired...I figured it out that the disc on top of the advance lever unscrews. I was thinking that I would have to use a spanner wrench or a similar tool.

Do'nt you just hate when that happens:^)