Not a big deal, because it's just story mode, we pushed through till it solved, but I'm wondering if anyone else has experienced this issue? Have the combos on the wheels changed?
The only times that I've thought this happened was when I accidentally mislabeled blue as white (blue has is the single dot and white is the dot with the 5 triangles around it). Honestly, I've always thought that their blue and white are too similar in appearance so it becomes a bit too easy to conflate the two. I'd expect that this was your problem.