Cleanup turns to mess up. Need some help troubleshooting.

As I recall without looking, the air flow past the choke butterfly, and its shape, with the weigth centered below the shaft, should keep it open.

When this random cuts off , does it sputter and gradually die, or does it cut off like a light switch? The latter is a characteristic of ignition problems, not carb/fuel.

A new thread would be nice....