if an engine has more air and it bogs at low speed but four strokes at high speeds(too much gas) is it posible to have to jet down with more air? could too much gas casue it to bog too? could too little gas cause it to four stroke at top end? well thanks for the info... oh and by the way i cant do any plug chops casue my leg is broken so id like to get this thing running right b4 it heals