* Change 1 Part Black {2739b Technic, Link 1 x 6 with Stoppers to 2739a Technic, Link 1 x 6 without Stoppers}
Comments from Submitter:
This set was released in June 2015. Two videos from Juni 2015 and August 2015 show 2739a. The set was inventoried in November 2015 with Source:
Instructions. Therefore I think it is extremely unlikely that it ever came with 2739b.