I have duel single barrel rochester carbs sitting on a fenton intake. When i step on the throttle, it bogs down and will die if i don't don't let up. It idles fine and will run at higher rpms if i slowly depress the throttle or feather it. I have reset the valves 3 times, set the timing to advance and retarded positions, still does the same thing. The carbs are sycronized because i used a uni-syn tool and both are set to the same vacumm. This is driving me crazy, help!!! Cecil........
