Help! I am trying to determine (and insert) the proper screws used at :24 in the Head & Neck animation. Is it the B screws that do not have a point? They won't screw in and I've been unable to expand the hole with the pointy screw. Any advice? It can't be THAT hard. I'm pretty much stuck at this point.

I have decided this project is not for me and would like to sell it to someone who would either like another or for spare parts, at a discount, of course. All parts are there. The head has been assembled.