The improvised picker returns work fairly well, but now I have another problem: the shifitng of the boxes.
Sometimes (maybe a third of the times?) when I shift the boxes, the one coming up stops short of at the correct height. Another try will get it all up. This happens at both sides, and from what I can see the elastics are not in the way.
Is there some maintenance I should have done? I looked through the manual but couldn't find anything on that. It has been more than 6 months since I last used the double boxes. I have tried to lubricate everything I could think of, but the problem doesn't go away.