If it was a float problem would not it overflow hot or cold? I had same problem, Puking, My dealer wanted to fix it under warranty, so for like 27K miles or so, he tried everything, new floats, different settings, jettings, PMS adjustments, Insulating the carb from heat, Insulating the fuel lines, Checking fuel pump pressure, All under warranty. Trust me when I say only cure is to go Pumpless, I resisted only because dealer was paying the bill, but he never gave me the money for the spilled gas, nor any reimbursement for embarrassment.

Credit Makcap for talking me into it just before my 3000 + Mile trip. (In the heat of July and gulf of Mexico) Went pumpless and haven't spilled any gas that way since. There is an article on it in the tech section, go all the way, Suzuki Float Valve, Vent the gas cap, and Pingle fuel flow valve and cleanable Hi Flow Gas filter.

And never have that problem again.

Bonus, you will have removed a weak link, an electric fuel pump that will die on you someday when you want the bike to start, it won't.