Hey thanks for all the help SuperKu.
I have tried to do the dist_down > 5 I get the same results when I run and then jump, so that is not the issue I was looking at all the other mdls created in 3dgs and they are .hmp files for the terrains, so my question becomes how do you take a mdl that you created in Maya and then covert it to a .hmp or terrain file?