69PLYMOUTHROADRUNNER/ ON CARTER CARBURETOR SHOULD BUTTERFLY BE ALL THE WAY CLOSED ON COLD START??

Yes, closed and factory is an avs, not afb. You can adjust the choke stat. One press of the gas all the way down should cause it to close as was said.
 
Push the gas peddle to the floor one time then turn it over and start. Do not pump peddle.
 
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