I've got an 02 TTR 125 and have issues with it. Runs good if I can get it running. But the float sticks (I think) and only starts about 50% of the time if I tap the carb. Other 50% just pisses gas onto the ground and won't even come close. But it has a mikuni carb on it. What was stock? How do I identify a Mikuni VM 24?