I dont know if this is posting a form if so here is what I need so much help with. I have a 66cc 2 stroke gas motor and it runs great some times. when I'm out riding it it will go to full power and ride good at full power but after some times a mile or even less or some times rides good all day. but what happes is when it riding at full power it will all of a suddon lose power as if it is wanting to die but it dont I can let off the throtle and it will idle and I can rev it up and it sounds good and some times it will pick up power and then bog down again any idea I have done every time from check the spark pluge to check all gaskets and even looking and taking apart the carb to even takeing the motor apart . but have not found anything wrong I have a felling its the carb or even maby my carb but dont know for sure. again if any one can help I be so happy