Updated Ploopy Nano Trackball Kit Assembly (markdown)

Ploopy-Nano-Trackball-Kit-Assembly.md

@@ -18,6 +18,8 @@ Note that some of these pictures were taken at different times, so they may show
 
 **TODO photo of all tools**
 
+TODO: Phillips head screwdriver, not allen key
+
 - 2mm Allen key or screwdriver (comes with your kit)
 - Soldering iron
 - Solder
@@ -52,6 +54,8 @@ Most of the time, it can be removed using nothing but your fingers. If you find
 
 **TODO photo of sensor optic placed down**
 
+TODO: top cavity must be flush
+
 - It's done this way to make installation easier. Just trust us on this one.
 - Make sure that the optic is oriented correctly. If it's not oriented correctly, the optic will bump into the sensor in the next step.
 
@@ -110,8 +114,6 @@ At the end, all of your bearings should look like this.
 
 **TODO photo of ball in top**
 
-Depending on slight size variations, you might need to push the ball in with some force, but it shouldn't require a large amount of force.
-
 ## Step X: Verify that the Ploopy Nano Trackball is working correctly
 
 Plug the trackball into your computer. If you move the ball, it should move the cursor.