ORIGINAL: FaF
So, Although slightly unclear, my carb does not match your picture 3rd one down. Or am i going mad. ??
no you're not going mad! that is a flatslide CMB carburretor!
the first 2 are RB/Novarossi type carbs (2 Needle) & the last one is a 3 Needle type carb with the Medium speed adjustment directly under the high speed needle, although FaF would disagree with me

even though the pictures posted by his Master (Grandma

) suggest i'm correct