Has anyone else had a problem with 427 side oiler gas fouling the plugs? What I have is a 427 side oiler, brand new. 140 lb. compression. Hydraulic roller cam. Eldelbrock Aluminum heads. MSD Inginition . Completely reworked carbs.,jetting, radius rods, springs, floats, etc. Eldelbrock Air Gap 2 x 4 intake with 550 carbs. I am running 3926 Autolite long reach plugs, .40 gap. It keeps gas fouling the spark plugs. I would appreciate any help. Thanks.