Carter carb manual covering 66 model year

Bewy said
#4119 carb.
#403 rods Three step: 069/058/065. 065 could be a printing error, might be 055.
#252 pri jet
#175 sec jet 0.073"

16-403 as measured in my 4119 was .069/.065/.058

What reference do you get these from?