I found the actual culprit last night. So, this is hard to believe, but I can remove the spark plug wire from either the cap, or the plug itself, hold it away from its connection spot, and be able to watch the arc flow, and the cylinder will fire, but once I fully connect either the spark plug end to the plug, or the cap end of the wire to the cap, it will start missing once again. I'm not sure what would cause anything like this... Mind boggling really.