Any 2 stroke experts out there

I have this coleman mini bike with a two stroke sachs motor. It runs great, but raw fuel drips out of the exhaust and makes a real mess.the gas is mixed 24:1, which is what is recommended. What could cause this? Thanks

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Exhaust could be getting plugged and running rich. Might try lowering the needle in the carb. I've taken an acetylene torch to the exhaust and burned out the carbon. Make sure your neighbors aren't home . lol