Index: This video has it's own index which you can see by expanding the first comment.
 - check for loose headset
 Under "adjustment" he shows a threaded headset, the lock nuts. Need a thin one.
 - good technique to keep track how much you tighten, but you'd probably figure out that youself.

Part Names:
  Threaded bearing race (threaded headset race)
  Top Locknut
  Lower race
  Headset wrench (eg: my miyata needs 23mm for and 32 mm for locknut

  20 Newton-meters