V-wheel "indenting"

[ArchilTophuridze1]

here is last post from David, he says 20th wheel has a flat ( I think he makes new ones with better angle)

V-wheels the same as the Smooth Idlers?

Forgive me if this has been covered… started the assembly of my x carriage today, and when opening the package of v-wheels I noticed they were not v-wheels, they were actually the exact same part as the smooth idlers. Is this something that’s been changed since the video was made?