My Vindicator is coughing a little and cutting out sometimes at idle and very low speeds. It runs great at WOT or between 2000 and 5500 RPM. I was thinking that maybe I should spray some deep creep into the carbs. However, I have no idea where to spray it? I'm attaching 3 photos of my motor and maybe someone could point me in the right direction. Also, what else could cause my motor to cough and sputter? Bad plugs?