If you readjust the choke pulloff, you also need to verify and perhaps readjust the linkage down to the fast idle cam.
The pulloff gets adjusted so the engine runs right--not too rich, not too lean--during the first ~30 seconds of run-time. At whatever distance the pulloff allows the engine to run right, the fast idle cam should drop so the second-highest step aligns with the fast-idle screw.
You would set the choke by pumping the gas pedal an appropriate amount based on ambient temperature. The choke blade snaps fully-closed, with the fast-idle cam on the highest step. Crank engine, engine starts, idle speed climbs. About 3--5--7 seconds of run-time, the engine has stabilized, and you tap the gas pedal. Now the fast idle cam drops ONE notch, to the second-highest step, idle speed moderates, and you drive off cautiously.
The point here, is that the fast idle cam has to be synchronized to the choke blade position as the pulloff opens the choke blade.
This--getting the fast idle cam synch'd to the choke blade--is one of the four major adjustments of the choke system.
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