Mathew, reread my post. I didn't say every flight. I said every day, unless there were unusual circumstances, like a storm approaching. THEN, you might have to readjust more than once a day. I am referring to two-strokes, not four-strokes. Four-strokes do not require as much readjusting.

I lived at sea level most of my life where we had lots of weather fronts moving through with constantly changing barometric pressure. Anyone that didn't readjust now and then ran the risk of a lean run.

Of course, you folks in southern California might not have to adjust that often, but I like to know where my engine's mixture is in relation to the weather.