I think u may have 35mm a/s not regular pwk , the airstrkers like the smaller main hence they are a way richer carb , the vary 10 points smaller than the pwk , for example the pwk would run a 155 main the a/ s will end up around 145 main . I have the same motor and i run a 145m 42 p , and 1 1/2 turns af with 35mm a/s , 20cc domes , drag port , matched cases , cpi inframe sb , +7 timing , 8in k&ns,