i heard messin with the carb adjustments can make a diffrence in how it runs.......i no there was othere treads about this but i dont understand....i live at sea level and should i chang one of my jets or were should i move the needle position, and its a lotaly stock xr50

 

can any1 help me please!!!!!!!!

 

i was told to run the needle 2 from the bottom, but i put my needle in the middle, that worked fine!!!!!!!!