Marble Run Screw #3

I printed the superb Marble Machine #3 but I found the screw wasn't picking up the 9.5mm steel balls correctly. I've redesigned the screw and this worked first time and very well for me so just thought I would share in case anyone has the same issue.

I printed this with supports on its side because my screw pitch is very different than the original. I found the supports remove easily and was up and running with this part as soon as I took the supports off.