carb help

i picked up a 58 chevy thats been sitting for years went to rebuild carb and the floats have gas in them i held under water no bubbels no wet spots nothing were can i get new ones its a rochester 4gc 7012126 maybee one of you guys have a stock pile thanks don

 

Drill two small holes in the float, one to let air in, one to let gas out. Then with a soldering gun fill the holes with a SMALL drop of solder. Done