Replying to GH2 Users of NS

I would really really really like to know your C1, C2, and C3 settings because for some reason I believe I have a setting on the gh2 that makes my image incredibly dark. For example, I put the dial on M with a aperture of 5.6, shutter of 60 and iso 160. I then switch to my C1 setting which has all the same settings supposedly as M but the image is way darker.

I can make a quick demonstration of this in a video if some one can't help from this its just really bugging me that my custom menus are basically unusable.

Thanks!