RAM Structural System 3D Viewer Grid Not Showing

We have some of our RAM models where the grid does not show up in views that rely on the 3D viewer and I cannot figure our how to turn it on. 

To be clear I clearly see the Hide/Show Grid button that works for any other model component, but toggling that button does not turn the grids on. 

I've also toggled the draw non-pertinent components button and it also does not work for the grids.

Thank you for your help.