Starts well, runs well at lower throttle but stumbles and bogs down when I throttle up to get out of the hole. Carbs rebuilt by a pro no more than ten running hours ago; ran fine for the ten hours.
The pro who worked on my motor last fall & rebuilt the carbs wouldn't even let me take the trailer off my truck until he did a compression test & without giving me numbers he said the motor had enough compression to make it worth working on.