Stewart Atkin

I live in Montreal and I do speak french and can read it. I have gone thru those pages but I just need to know if there was a disassembly guide or at least someone that has already dismantled these lenses.

I recently bought the Dyaliscope anamorphic 35mm projector lens. When I first got it I could adjust the focus ring but it was very stiff. Now it is totally jammed. I get clear images with diopters but infinity is a bit soft. I've taken it apart a few times but can't seem to get it un jammed. Has anyone had any experiemce taking these lenses apart? There is very little if any info available on these French lenses. Pictured below is a similar lens