Carb help!!!

I have my urban dz 125 running well but it seem to be poring petrol out of the over flow pipe when petrol tap is on all when the engine is running on tick over. Can anyone help me with what this could be??

float valve is probaly leaking or float level is too high
remove the float bowl you will see how it works

some carbs have a screw on the carb for draining the float bowl , kneel down on the left side facing front tire look at float bowl , the screw on the bottom is the drain screw , screw it in

if that aint it u need to pull the bowl and slightly bend the floats down

Thanks guys I will give it a go at weekend and update when done