Vertex k8400 parts confusion

I wonder if i have missed something in the building instructions
What to do with the two smallest parts of subkit 15 d
Two tiny funnellike parts

I asked the same question a week ago when I realized I had two left over.
They are for the K8200 printer and is not used.

you can use these parts if you want to build a non bowden extruder. But you cannot use them on a Vertex printer.