I have an issue with my outboard. It has a big miss at idle and will shutdown when a big miss occurs. I completely redid my pontoon boat this year. New gas tank, new line.. The miss did go away for a couple hours and purred like a kitten but came back. Brand new NGK plugs, and I already tried swapping out the top coil. Issue remains. For the video I did a high idle and would unplug each spark plug wire to hear or feel a difference. When all 3 wires are connected, the miss is there. If I remove the top plug wire, you hear spark but the big miss is still there and nothing changes. If you just disconnect either the middle or bottom spark plug wire the engine rpm drops like it should and the big miss is gone. Put the wire back on so all 3 are hooked up the miss comes back. So to me, there is something going on with that top cylinder. Any ideas people?