I have begun to use models in my maps, custom ones, not the ones that come with dod. I am having some problems putting them into the map, more specifcally this grass model I have made. I gave the model a hitbox of 0 0 0 0 0 0 which works just fine, you can shoot through any portion of it without problems. But, there is a section in the center of the grass model that you cannot walk through. I believe this section is the actual cycler entity and not something dealing with the hitbox. So for people who have done this before, how do I make it so you can walk through the cycler while ingame? Or is there a better entity to use for this purpose?

use an env_model instead if to insert models
use the latest FGD and Hammer 3.5 to see the models when you instert them