Ok.
Based on the photos none of the planes have white bands on the wings. Techmod decals suggest white bands on the lower surfaces as on the plane from Charlie's link.
Was there any convention to mark the Flight leader plane with those white bands?
Now, to make things even more complicated I found this
???????????? - look at the first plane
I also located decal sheet showing 261st Kokutai Zeros
1/72 Zero Model 21 261st Flying Group
I think that I will leave the yellow band as is, add white stripes on upper and lower wing surfaces and paint front of the blades silver....