My 2000 Honda Xr100r won t start anymore?

I was riding it one day and it ran fine, then 2 days later i tryed to start it and it wouldn t start, all my gas was pissing out of the flood on the bottom of my carb, continuously, turned my gas off, let it sit for couple days, turned on gas, instantly coming out the flood again, at one point it even started leaking out of the bottom of my air box. Bought an entire new carb and throttle cable, put it in, now leaking out the petcock not carb anymore. No idea whats happening. Its getting spark, ive almost given up hope.

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