hello every one out there still having trouble with my beta evo 300 4t still spitting and banging and flames out of the back box tried new plug cheked the air hoses from the air box to the carb the one on the air box was off put it back on still the same cleaned the jets in the carb and the fuel inlet valve removed the fuel tap all clean dried out the cdi unit and cleaned the green of the terminals and the connector block at a bit of a loss were to go next any help would be appreciated many thanks john