I have no idea why it needs to be plugged when setting. I imagine it has something to do with the vacuum force has the potential to pull it off where I set it when I let go.
Here are some more videos of it smoking after starting it up this afternoon. Not really sure what it could be, sort of fishing for ideas if anyone has any. I haven't messed with the carb or adjusted the timing any since I got it started yesterday. I just wanted to go out and run it to operating temperature to open the thermostat to try to cycle the bottle of flush some since I don't think I let it run that long yesterday.
https://www.youtube.com/watch?v=hReOCfRV_JU
https://www.youtube.com/watch?v=kXO9iZedjvw
https://www.youtube.com/watch?v=avD4bjp0LUE