Everything sounded great yesterday so took out to our weekly cruise nite that started up.Sitting at a light was fine and so was taking off. but when reaching a certain speed to cruise like 20-30ect I could feel some hestitation. give it some gas and would take run good till I would ease to a steady speed.Have pressure at 4psi. wondering if that might be to low or carb dirty,bad wires,plugs fouled??? Diving me alittle nuts knowing it's close but just not there. Have dropped in an elebrock 600cfm... thanks for any input.