thanks for the kind words....
The balls are fed to the shooter by a small roller wheel just under it, at the top of the helix. This is another part we need to work on, the helix drives the balls up against this and the balls can sneak out around the part that is supposed to stop them. Today's challenge for the mechanism team is to design a cure for this problem.
The picture is a few days old, showing the roller on the prototype top part, looking up from below.
