The car misses badly during warm up. After that, it runs fine. The choke seems to be operating properly. Also, when it misses, the tach becomes very erratic. It does not miss (during warm up) if I push the throttle near wide open, into the secondaries, or at idle.
Are u sure ur carb provide additional fuel for warm up or u just refer to choke operate normally as mechanically it move smoothly.A german shepherd gotta be a dog but a dog may not be a german shepherd. Try this. Supply propane thru a vacuum inlet during misfire. If it smooth out.U know what to do. Good luck man