Quick "Create Geom" help?

[Nerl).3]

I recently began the creation of a new map. From earlier days of "I wonder what this button does?" experimenting, I noticed that using the Create Geom feature would tile your texture. So as I began my work on a full map, I tried to take advantage of this by making a simple striped background to fill the shape the planes are contained in. But every time, there's empty space between each "tile", so that the background color made a border around each. I tried some different textures, but no go.

Right now i'm trying a different approach, but i requires some trial an error.

Anyway, what am I doing wrong? How, or can i, get rid of those spaces between each texture tile?
I'm starting to feel silly.

[lamster]

In order to tile a texture's dimensions must be powers of 2, for example:

4x4, 8x16, 256x32, 512x512, are all valid sizes for a repeating texture.

Otherwise you'll see blank spaces where the texture has been automatically expanded to the nearest power of 2 dimension.

[Nerl).3]

Thank you!