In my case, as per my earlier post - my bike doesn't actually need the choke to start from cold. The OE Mikcarb didn't have a choke fitted, either, only a device to enrich the mixture for starting.
In forty nine years of owning bikes, the only one I've owned that does need a "choke" is my present Honda CB750 Nighthawk and only because it's set up for the Japanese home market where it needed to run as weak as weasel water. But the carbs on that don't actually have "chokes" either, only mixture enrichment.
The choke flap on a concentric is spring loaded "on" by default, it's separate from the normal air slide. If you don't want to fit the cable and lever to a bike which wasn't designed for one (mine wasn't), the choke flap has to be removed.
Built like a gun... could go BANG!