hey guys, i fink my novarossi is a cx12 wit a pull start starter
wen i apply the throttle quickly to full, it starts to bogg and choke at the high end and stalls if i keep it at full thorttle
but wen i apply the thorttle gently to full thorttle it isnt too bad

what am i doin wrong???
and my bro has mess up all my needle settings including my mid range

so please can i have the standard needle settings for all needles please

thanks and please help