yes the choke and the plastic cam work together.
the round black choke spring cover has notches marked in it for the 1,2,3 richness settings.
and yes i turned mine into a manual choke system because of the choke sticking issue that caused my mpg to suck.
and if you have not done the nutter by pass that is a must do.
it helps with cold starts, idling, lets the motor rev better and just plain run better.
give me a call if you need to ask anything while your wrenching on your JEEP.