Tuning thunger tiger engine
 

Hey i have a thunder tiger DT-10 with the standard engine and i can't seem to get it tuned properly, basically it goes fine and i've had it running really quick without bogging out but on idle even if its really low the wheels still wanna turn and spin round if they care is take off the ground. Im guessing this is doing no good to the clutch so i wanna know what to change before i run it properly again. It doesn't have a low speed nedle, just high speed and idle screw. I have a basic tuning knowledge but someone to recap me wouldn't go a amiss i.e. what leaning/richening it out does?

cheers!!!