Yesterday I checked My Bag and Nikes Black that was 4.6 Spin, decreased to 4.5. Then I went to the Store and compare with a TP5 one and the Spin spec is 4.6 (what is the correct number).
I made this comparison of those two views here.
I sent a message to Help Center but have no answer until now - anyone with the same problem?
Cheers.
Mox