Material Help - Complicated Tile Pattern

[Student2025]

I have this complicated tile pattern that I was trying to place in Chief Architect; it kept leaving a sliver each time I tried to adjust the sizing (first photo). The second photo is a rendering from SketchUp. I ended up having to draw it myself. I couldn't figure out how to repeat the tile pattern in Chief to make it cohesive. I also tried the 3D material editor to move and adjust, but that didn't help much either. Can someone help me? I have been using Chief for about 2 years now as a student and 6m+ as a "professional designer," so I know I have a lot more to learn, but right now I am pretty much learning all of this on the fly for each design project I get. 

Edited 2 hours ago by Student2025