That's not a Nervex shell is it? The Hetchins I bought last year from England had a modern Campy cartridge BB in it and I found that a double chain wheel wouldn't work (short spindle end on the drive side!) It finally came out when I realized it was in backwards. Because of the modern BB, there wasn't the obvious clue that a cup-and-cone one would have given. It's now using a Mavic threadless BB, which is just fine.
David Bean
Arlington, MA USA
beandk at are-see-enn dot com