Oh, you mean because they're so teeny-tiny?

Meanwhile, I did find a pdf of the schematics, and it appears that these components are, indeed, part of the touchscreen circuit, either caps to ground, or resistors in series with the sig path. Unfortunately, the PDF isn't quite clear enough to be able to determine precisely which components I'm missing.

Here, in case you're curious, I've just uploaded a copy to my server which you can find here. It's actually pretty interesting to look at, being several pages long including a photo of the nekkid board!

Meanwhile, as I write this, the entire school age population of my town is marching by my door, drumming and blowing bugles, this being Mexico's independence day.

Viva!!