SimObject with land-able surface

I’m curious if anyone has any thoughts on the right way to approach this problem.

I am trying to create a SimObject that has a landable surface/hard surface. I have been able to successfully create a hard/landable surface for static scenery by checking the “road material” box in the material of the model. However, if I place this in the SimObject samples, the surface is no longer landable.

I’m not sure if this is currently a bug in the SDK or if I am approaching it the wrong way.

Any thoughts?