Help w/340 carb selection

The main wells may be leaking on that factory avs. If you look at the bottom of the carb just outside of the primary bores you will see two soft plugs about an 1/8-3/16 in diameter. These plugs work loose. You can drill them out and install either 1/16 pipie plugs or set screws with locktight.

When these plugs become porous they allow fuel to be drawn into the intake causing a rich condition and hard starting after a hot soak.

Don't throw it away. Sell it on e-bay.

The eddy thunder series is a real close match.