Have you noticed that carbureted engines behave differently in varying temperatures? We have, and it’s a pretty good argument for the simplicity of fuel injection.
But if you’re stuck in the carb age, tweaking the idle mixture (perhaps often) for the intended operating climate could be a necessary evil for properly maintaining it. Unless you’re an A&P, adjusting carburetors may not be an approved owner-performed task. But you can help your tech get it right to your liking by knowing the basics. Here’s a primer.