I have 11 bags of plastic parts and screws(A and D). I've got the head together(with the optional LED)

and am working on the neck. The neck calls for a B screw (or C). But, there are no B nor C screws evident.
And for the future, I don't see anything like a rivet in the kit either.
Thanks,
Eric
Yeah, the blocks in the shanks should be removed later. It was a design to hold the screws and make their counts clear.