Chris Sherlock made a video about that dreaded helicoid stuck in the cameraPFMcFarland wrote: ↑Sun Jan 31, 2021 9:30 pmGood work, Pablo. I never did get mine finished because I kind of gave up on trying to get the helical loose. Worst Agfa I've ever worked on for that problem. Anyway, your rangefinder issue is a sticky control lever, and since the Ansco Super Memar body is similar I have a set of photos for you to reference showing the top removal and rangefinder cleaning. It's at https://flic.kr/s/aHsjCbMYma
Good luck! If you can take the lens and shutter apart for cleaning, then removing the top should be a breeze.
PF
I'm still unable to open the top and basically put the camera back in the shelf