Does anyone know if there is any adjustment to automatic choke ? its an 87 carburated 22r, the auto choke works great, on cold mornings , it just seems to racing the engine too fast. I dont have a tach, but i'm guessing it idles normally about 600rpm and before the auto choke kicks out it seems to running 1400 or more. if I could get it somewhere between there, in the 800-900rpm that seems like it would be better on a cold engine !!?? thanks in advance