leaky carb

I have a 84 kdx 200 the hoses that run out of the side of the carb one of them is leaking gas I thought it was an overflow so I checked the floats they looked ok I pulled out the float valve that looked worn and thought it might not be sealing properly so I replaced it and it is still leaking gas Itried tosee what else it could be I am not to sure what to look for the repair manual is not much help any suggestions anyone

the bike is upright and runs fine when I go riding and stop with the engine running or not I notice it leaking it is kind of hard to tell if it leaks while I am riding