Changes to Step #7

Edit by Dave Ogles —

Edit approved by Grégoire Saunier

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[title] Prepare Y bearings
-[* 2] We are now going to insert the LM8UU bearings in the 3x ''y_bearing_holders''. When you place the bearings you need to orientate one of tiny balls row vertically as shown on the image.
-[* 5] Insert the 3x LM8UU bearings in the 3x ''y_bearing_holders''
-[* 9] Verify the orientation of the 3x bearings, it is very important to have them correctly aligned!
-[* 1] Reserve the 3x ''y_bearing_holders'' for later use.
+[* 2] We are now going to insert the LM8UU bearings in the 3x ''y_bearing_holders''. When you place the bearings you need to ensure that the rows of ball bearings are aligned, vertically, as shown in the image.
+[* 5] Insert the LM8UU bearings in the each of the 3x ''y_bearing_holders''. Each bearing should be centred in the bearing holder. There are ridges in the plastic part which will align with the grooves in the LM8UU bearing.
+[* 9] Confirm that each bearing is aligned vertically as shown in the first image. It is very important to have all x3 bearings correctly aligned!
+[* 1] Keep the 3x ''y_bearing_holders'' ready for use later in this chapter.