Re: Need help with persistent problem.
It does sound like you are running rich and starting to flood out. If you are running a regular updraft carburetor, just remember that is was originally gravity fed so putting a fuel pump in the mix could add more fuel. I would try, as mentioned, either trying to eliminate the fuel pump from the circuit and see if the problem goes away, or continue trying to dial down the regulator until it either starves out or gets better.
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