I just finished an overhaul on a 1979, 235 Evinrude. Now I have an energized engine. I'm getting readings of about 2.5volts through the block and the kill switch (key) doesn't kill the engine completely. The engine will keep sputtering along for several seconds. I've pretty much eliminated all the control side of the wiring and all the visible engine wiring looks good. Anybody got any suggestions before I start cutting open all the wiring loom wrapping.