Carb throttle idle screw not adjusting SOLVED

It is common for those to stay/stick on the fast-idle cam, due to either the cam sticking, or the choke is faulty, or the choke is not getting enough heat.
Try a penetrating lube on the cam. If that don't do it remove and polish the pivot screw, reinstall it dry.
I have, many a time, zip-tied a weight onto the vertical link, making it heavy enough to trip the cam.