pathing image - mikak

okay, so problem: paths in the background are totally screwed :( the corner bit of the road (ie where the paths are really damned dense) is a rounded corner, which is okay in that the pathnodes on either side of the road are nicely routed, but then they also decide to join up with the other side of the road, and that's not candy :(

how do i block the road off from the pawns and their pathing, but leave it unaffected for the player and lighting?