Hi, I have this Kalimar 80-200mm f3.9 FD mount lens and it's stuck wide open. I have Canon FD lenses with which I have gotten the aperture ring to release and work with adapters (yes, I have done my research and watched a ton of YT videos lol), but that process is not working here. So I'm wondering if anyone has experience with this lens and can give some direction? Thank you! Photo of mount attached. With the Canon lenses I would push in the chrome pin and make sure the lever on the adapter was to the left of the aperture mover on the lens. That isn't working in this case. The aperture mover remains stuck part way along when the adapter is attached. The aperature blades do nothing. I also see a tiny chrome pindot on the lens mount but have no idea what that does and haven't pushed it yet (not sure I have anything that small to push it with ;-) ) Stuck blades?