In the bowl of your carb is a tiny tube that sticks up where gas can flood out of a tube in the bottom of the carb. If your carb isn't leaking out of the bottom then the tube passage is either not ckean or not flooding. Clean the tube by blowing air through. Then if it leaks out of the bottom it's flooding.
It's very important you clean the tube to keep gas from getting in your oil so you may want to smell your oil for gas and see if it needs changed.
I don't believe you can replace the brass seat that the float valve sits in on your carb you can try to out toothpaste or brass cleaner on a qtip and ckean it but lots of times that doesn't work either so you may need to buy a new carb if you can't get that fitting clean.
It's very important you clean the tube to keep gas from getting in your oil so you may want to smell your oil for gas and see if it needs changed.
I don't believe you can replace the brass seat that the float valve sits in on your carb you can try to out toothpaste or brass cleaner on a qtip and ckean it but lots of times that doesn't work either so you may need to buy a new carb if you can't get that fitting clean.