1995 evinrude 130hp (V4 looper). the manual states to adjust "C" in forward gear to 950 rpm to set idle. Then it states, "turn the expansion link adjustment knob "B" counterclockwise until timer base just begins to move from "D". However, my outboard does not have screw "D". How can i accurately adjust the knob if i don't have screw "D"? Does anyone know how to properly adjust the idle speed? Is "B" or "C" my idle screw? That diagram is taking from the manual for "130hp" model but clearly does not look exactly like mine.