Inside view of a Reflekta II

Since I have it, I have some problems with the trigger of my Reflekta II. From time to time, I can't press it anymore.

Last saturday, I spoke about that problem with a guy at the Bièvre photo exibition, and he told me that I should open it and try to clean the things, because it's an old mecanism and except that there should not be any problem.

Here I go, I open it last thuesday, and that the optical and shutter inside view.