Re: the 80mm Rodagon. It sounds like the one I got new back in the early '80s. The aperture ring should pull down slightly and disengage the click stops. I think the theory behind that was to allow continuous aperture setting for "zeroing" in on exposure when using enlarging meters. (now that's how I recall it...)

Over the years it's been my go to lens for 6x6.

Not sure if the modern lens specs correspond or not...