RE: Powerpoint Presentation Slide 13I think if you can take the holes on Slide 8 that show the Cantuar feeder, and find those holes on Slide 15, you might have a good idea if they occur in the area of that green dot. Note that another large dot (red, same size as the green dot) also appears in Slide 13, and that is the sight of the current shaft.
You may be on to something here, alois12!