* Delete 2 Part 2739 Dark Gray Technic, Link 1 x 6 - (Undetermined Inner Ring Ends Version)
* Add 2 Part 2739a Dark Gray Technic, Link 1 x 6 without Stoppers
* Delete 2 Part 2739 Dark Gray Technic, Link 1 x 6 - (Undetermined Inner Ring Ends Version)
* Add 2 Part 2739a Dark Gray Technic, Link 1 x 6 without Stoppers
* Delete 2 Part 2739 Dark Gray Technic, Link 1 x 6 - (Undetermined Inner Ring Ends Version)
* Add 2 Part 2739a Dark Gray Technic, Link 1 x 6 without Stoppers
came with the version with stoppers, so it is highly likely that this set has
the version with stoppers. The design of the set pretty much requires the version
with stoppers since the tow ball connection needs to remain tight. In fact, you
can tell he built the set wrong in the video because the ends of the link should
be attached to the tow balls on the tow ball pins instead of hanging over the
pin portion of the tow ball pins. It is most likely built like that in the video
because the stoppers are backwards.