i am wondering what is the smallest CC dome i can safely run on my bansh? right now i am running 21cc domes and i run on vp110 octane fuel. i would like to try out some 18 or 19 cc domes but i dont want to kill the bottom end of my motor. i dont have any motor work done.. one of my buds has 20cc domes and i need to out do him!!! thanx for any help