Yfz david

Ok ive got a factory banshee the only mod is is 0.50 over with weisco pistons ive been trying to tune this thing i cleaned the carbs all the jets are factory ive got the air screws 2 3/4 turns out and the plugs are still white they both have a brown line on the plugs if that makes sence kind of line a burn mark im running the ngk br7es it bogs on take off and on the low end the mid and top end is great revs out cant really get on it fresh top end and i really dont want to toast this thing because of it being too lean any ideas if should i jet it or what i should check if so what size im in east texas and like i said before its all factory any input would be great thanks in advance

Thanks man

2 big uni's on carbs

Ok im jetting a buddys bike need to know what jets it need note bike has not been ran yet 80 over bore cooltech race head wiesco ultra light pistons 20cc noss domes ported reed cages carbon fiber reeds fmf gold fatty expansion chambers and stingers keywayed for advanced timing jetted for stock bore and compression Im in texas as far as elevation goes thanks in advance