will do. later today. its 18.% bb center to top of seat tube so. if they measure BBc enter to middle of top tube or topr of top tube it may be 17.5. but you are right center to center on top tube will tell us.
nope thats what they look like where the chainstay bends on both sides. https://www.retrobike.co.uk/attachments/img_1936-webp.910080/ https://www.retrobike.co.uk/attachments/img_5467-webp.924954/