sounds more like a float jam... where are they leaking from did you see? my fuel came out of the drain/overflow pipes, maybe you have the same problem.
If the bowls had not being removed or taken off since a month ago i dont see how the seals can cause a fuel leak. but i may be wrong!
better get a flash light and have a good look before... well if this is happening you got to take the carbs off anyway.
good luck!
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