Problem mapping CDJ-700s with Traktor Pro S4

Jog wheel going in reverse on CDJ-700 with Traktor Pro S4

I’ve got Traktor Pro S4 running on a Mac with OS X 10.10.5, and I think I’ve got everything just about set up - the problem is that my second deck has something wrong with the mapping of controls. The jog wheel moves things in the opposite direction. Deck A is set up correctly, but B does the exact opposite. Can someone tell me what needs to change to make things consistent?