hi thanks Gordon, yes I got the feeling that may be the case lots of info on adjustable ones but not the fixed position ones.
basically and a very short explanation the other week I picked up a job lot of old stock carbs from a auto jumble in a box. in there on inspection was a set of 34mm ACR carbs. a selection of Amal's and some flat and round slide Mikuni's plus a folder containing dozens of mixed needles, jets, gaskets ect. my intention is to recreate or mimic the settings of different carbs on the EX using as near stock settings as possible to see what gives. now we all know the CVK's work very well in stock form. so as a project the goal is to find out the difference the carb design makes given that all the settings are the same.
jets, needle jets and other stuff is easy to mimic given we know the sizes. but the profile and size of the stock N36N is somewhat of a mystery once the sizes are found there are plenty of adjustable ones that can be used. this is a project and experiment nothing else all it is going to take is time and money neither of which is an issue.
as a last resort given the info is difficult to obtain it may be a case of whipping out the needles on the gen 1 and measuring them.