I have a aero 125 which i had the same problem with. It could be two things, i'm not too familiar with the 80 but my 125 has an auto choke, there is a jet in the float bowl that is very tiny and runs from the float bowl to a passageway that is casted right beside the float bowl, if this is not clean it will be a bitch to start and the choke will not work, also if the choke is stuke either down or up it won't run right. Other than these two things the carb is relatively simple. Also check oyur reed valve manybe that is your problem and not the carberator at all. If the reed is cracked or even has a pin whole the scoot won't run.