I have a 1984 150hp Evinrude rebuilt 1998 with VRO disconnected. Starts fine cold and warm after running fast. When going under 5mph for a while, if engine stalls at low rpm. Extremely hard to re start. I have temp guages on both cyl heads. Temp around 150 when stalling. Crank is strong, but sounds like no spark. Dangerous when trolling near low water.