1995 Other Suzuki Models Carburetor Flood

Dear Sir/Madam

I Have Suzuki Katana GX 1996.
I hove problem with the carburetor.
it always flood.
Many gasoline is thrown when I open the pipe which connect from carburetor and air filter.

last week, I went to Suzuki Repair Center. At that time, they fix it (I thing). After I arrive at home, the same problem occur.
at monday. I went to Suzuki repair center. They said, they fix it. But this morning, the carburetor is floods.

what happen with the carb?

Could you help me to solve this problem?
thanks in advance,

anom