Asalam o alikum bhaiyoun i recently installed pz22 in my superpower cd70 . I swapped the main jet of 85 with 78 for better economy but i am experiencing missing problems I recently took out my plug and it was black suggesting the mixture of fuel was rich or lean i have changed my bike flange (bend) to a bigger hole . Mechanic nay bottle k moun ka size chota kardiya he . Koi bhai guide karde