many thanks SlickThere are some links given in the link below that give setup configuration for Amal carbs by bike model number. There may be something you can glean from those links.
What Monobloc's carburetors do I have?
When I got my 1966 N15CS in various pieces, it came set up with concentric carburetors, but there were a pair of monobloc's. As I would like to return the bike to standard I started to do some research on them, trouble is I am I not sure what I have. In 1 of my books it states that the carbies...www.accessnorton.com
Slick