I stand corrected. Don't read when your sick. Last night I was reading the article from RC Car Action April 2004 Piston Power Fact & Fiction 3-Needle Carbs. It shows details of the carb.

Now I was looking thru an LST Manual online and saw in the carb section that I was wrong in the carb needles. I went back to re-read the article and I stand corrected. So I am retracting my earlier posting. Sorry if I confused you.