air screws should be at 1.5 turns u should do a compression test and see where yout at and also check your syncronization of the carbs what is your set up pipes jets other bolt ons we need all this stuff to help
I am farley new the the banshee myself but I do know that the TORS are problemmatic and is best off to eliminate the the tors are the big monitor on the top of your carbs. surch the forums for tors eliminator hope i helped you