I have a "55" 235 with dual carbs using W-1 684S. I set the timing using a vacuum gauge by advancing the distributor until the vacuum reached the highest point and backed it off 1". The vacuum is 18". The carbs are balanced and the truck runs great except for one problem. When I come to a quick stop from say 30 mph the engine want to die. It will start right up and idle fine. If I come to a slower rolling stop it continues to idle ok. I recently adjusted the floats on the carbs due to gas leaking when the engine was first shut down and causing flooding. Float adjustment so far has stopped that problem but now I have this engine wanting to die at a stop. Both carbs were rebuilt. 95% of the time the engine runs great. Where do I start to look for a cure for the problem?

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