ive got a 1996 blaster with fmf full pipe moose filter 280 main jet on stock carb, i cant get it to idle one day it was workin fine then the next it wasnt so i checked plug it was black so i leaned out my gas mix but with a 280 main jet idk what i should have my pilot screw set at? and suggestions or help would be great and btw yesterday i seafoamed it so i would think carb is clean