['68OrangeSunshine]

Times two on Manual Choke.
I found ''Automatic'' chokes went off at all the wrong times, atmospheric conditions and pressures.
But then Arizona is a unique environment.
Hot desert days, cold nights.
Hot in the Valley, then super-chilled in the mountains. Once the auto choke went off on my '67 K/10 Sub after spiralling down a few levels [couple thousand feet] of a pit mine, while on location. I had to take off the air cleaner, and jam a screwdriver butt into the throttle body to keep the butterfly open.
With a manual choke, I can pull the knob if I need it. But it stays off when I don't want it.