Every cam card I have ever seen is always a hot setting, never cold. My ls6 grew .006 from cold to hot. .012 cold grew to .018. Once I verified the growth rate, I always lashed the valves cold, very consistent method, as nothing changing during from the first to the last valve, plus who wants to deal with hot parts and oil.

950 rpm is your number for that cam at idle, any 4 corner carb should always be set equally on front and rear throttle plates.use manifold vacuum if you run a vacuum advance.