Dave and I talked about this and pinching the line to test the accumulator is the most likely to bare fruit,the injectors including the cold start are far from the front line of maybes makes More sense that the fuel pressure is leaking down,to allow vapor into intake and thus cause the over Rich condition upon restart of warm engine, ssssssssso if it isn't the accumulator it would most likely be a check valve at the pumps but they are just a year old.