ohmaback- I don't have any single pull heater controls but I do have some knobs but I don't know if they are choke knobs or heater control knobs. Is you shaft threaded? The heater control and choke knobs may be the same. If one will work I have some.
C10chevy1966 I still have the 66 wheel. Here are a few close ups of the cracks. It has a few cracks but not bad compared to most.
Thanks Lyle