jetting issue

[LONGROD]

ok so My shee i got from a buddy will start choke out and throttle half in. runs like ass back fires, spits barely will run with clutch disengaged , then will rip on the main jet and the needle once it gets the fuel flowing.. it will not idle.. so went from 25 to 30 pilots because its what I had.. runs better, no spiting but little response until u run it on the main jet to clean it out. then runs strong on needle and main jet.. so I pick up some 27.5 pilots . and runs like shit, spits and back fires and hard starting..

 

 

stock motor except for fmf fatty's, tors removal, and open k&n filters

[fastquad02blaster]

You shouldn't need anything bigger than a 27.5. Your carbs have to be dirty or you have an air leak somewhere. Does pulling the choke out halfway help any?