Some of us have been trying for many years to educate people about "factory" needle settings...THEY CAN NOT POSSIBLY ANTICIPATE THE CONDITIONS UNDER WHICH EVERY ENGINE WILL OPERATE..PERIOD, END OF STORY..
Gassers are NOT plug and play computers...If you will learn to set your carb yourself and not rely on someone else's guess, you will be better off..
YOU WILL NOT DAMAGE YOUR ENGINE STARTING IT OFF WITH THE NEEDLES 2 TURNS OUT AND ADJUSTING IT FROM THERE....