slinger, i didnt mean to confuse you..lol the talk about head and cyl spacers for higher rpms, etc... porting, scaveging?!?!?!? see, i am not the only one saying huh??...lmao.... yeah, but i would say i cant get but so much out of a 14mm carb.. i have tools, not much cash...lmao bore it out and get my power from stock jug