Re: using choke to kill engine?
I run the CNS carb with the enrichment jet type of "choke" that has the old school shifter lever that mounts on the handle bars. I didn't care for that lever, since I never use the front dérailleur any more I ran my "choke" cable to front dérailleur lever (thumb shifter lever on old school mountain bike). I love this setup cause I can hold the enrichment jet open easily with my thumb, if I don't latch the lever it snaps back closed when I let go. I find I only need the enrichment jet for very short periods so this works great.
A side benefit is I can now use this shift lever to kill the motor via the choke without removing my hands from the handle bars...