This is a question rather than a problem.
My 1991 Mini (bog standard 998cc) is almost certainly running a little rich. It runs great, but there's a fair bit of fuel smell and when I cold start it I only need the choke to start it, then I can immediately blip the throttle and I push the choke cable back in again. (Kind of like my old Vespa actually)
Reading this forum (and comments about clothes pegs on the choke knob) leads me to believe it's not supposed to be this easy.
Adjusting the carb mix will be no problem, but this is the first Mini I've owned, so my question is how will I know when I've got it set up right? What do they normally behave like on a cold start?