Howdy!!
From the picture and instructions, where would you probe your one hit? What does "behind" mean to you? You going to probe the yellow or red circle??
in general y+ is toward the back of the machine so i assume behind the hole would be the yellow marker. but key word "assume". that being said if i was writing up work instructions i would include the picture but only with the yellow dot and change the wording to include a reference to the yellow dot.
in general y+ is toward the back of the machine so i assume behind the hole would be the yellow marker. but key word "assume". that being said if i was writing up work instructions i would include the picture but only with the yellow dot and change the wording to include a reference to the yellow dot.