This video is so wrong. The “second nut” is in the bar itself. The visible nut is the lock nut. Mine were loose on delivery, after tightening it has been just fine. And by the way, the word he was looking for was knuckle.I just came across this. Its very interesting comment on the steering. I hope this problem is solved at the factory and not at our garages.
View: https://www.youtube.com/watch?v=HOQyc58Ix2Q