Dunno if there is, but sounds like you need to create a geo LOD (to do one in a hurry, right click your original model lod (the one that says 0.000) and "duplicate", then go "properties" on the new lod and change it to geometary. then you need to select all the points on the Geo lod, create a named selection (its in the final drop down menu, under "named selectons") called Component_01 (i think....im doing this wholey from memory because i dont have O2 to hand)
Then you need to do the same again, only make the next LOD a "path" (i think, might be a road or something instead), and move the surface of lod up vertically ever so slightly., so its above the rest of the model, otherwise youll start bouncing round like crazy.....
Hope i'm along the right lines, as i said, its all from memory....