Solid Model Analyzer - Grained Material

I created a few custom 3D products and the material is grained. I used Solid Model Analyzer to create the Microvellum products. And when I nest the parts, Microvellum optimizes the parts without considering the grain direction. I guess Solid Model Analyzer cannot recognize if the parts are grained or not. Because the values in the analyzed products are hard-coded, I cannot swap the part widths and lengths to try to flip the part to get the correct grain direction. Am I missing something?