I ground the screw heads off the sides of the film gate, and nothing budges. I see three rivets on each side down in the film 'wells', but they look like they would affect the integrity of the body. There are no additional screws visible on this camera, unless they are under the decorative skin. I may try solvent on the wrap to see what's underneath. The film get looks like it's part of the top & bottom sheet metal that the film holder and roller are attached (somehow) to. Looks like more 1-time hardware.
BTW, it's an Agfa Ventura 69.