Known problems:
-Taking lens was collimated in this mark of the viewing lens.
-Aperture mark was done with this little piece of different leather (it should be that metal thing shown above).
Tips and hints, some serviced this camera before, at least I could see twice. Several marks inside, some useful some not.
Let's go, step one, how to access the mirror, ground glass, counter mechanism, parallax and aperture wheels.
Some hidden screws, carefully skin the leatherette injecting small portions of Isopropanol to access those screws.
Here it could be wise to remove the film counter reset leveller before.
Thank you "josulgerman" from photodotnet to upload how to remove the upper case.
Now I went absolutely with no guide from now, I asked 3 guys from flicker who own/owned this camera but or they sold it or had no info about it.
After removing the upper case this is found, wind leveller, springs pulling from the ground glass+mirror for the parallax correction and a flimsy spring that barely could reset the frame counter.
Pulling that thing to the right you reset the frame counter to 1, I had to pull it 2-3 times to make the spring work.
Attention to that wheel in the film chamber, its triggered by the film being advance and making the frame counter go to the next number, pulling right the external leveller makes this wheel go inside so the "flimsy" spring will take the counter to 1.
There is no automatic mechanism to stop you every frame, the red window is still the best way to place your next frame, the wind leveller can be moved till the end of the swing or wherever you need. If you use the leather ready case you still have a visual of both numbers (counter and red one), it could be useful in dark conditions.
Dent wheel connected to the external aperture ring. A lot to discuss here but later.
Camera was a bit dusty inside.
Eccentric ring connected to the viewing lens for the parallax correction, that small circular metal turning part can be adjusted for more distance from the mirror.
So if the viewing lens is "marking" from 1 to 4 metres the viewing lens goes out and down forcing the parallax correction.
From the mirror, parallax can be adjusted from unscrewing and moving it to the right taking the wheel to even more ahead producing greater parallax corrections.
Now all clean, film counter spring is no longer flimsy and in one strike can take the counter back to 1.
To be continued...