Not if you gave them a threshold. What I said would only align then properly when they got to a certain distance of the wall, doesn't mean that distance has to be right in the middle. Actually having them flying exactly in the middle of the track would be impossible because the system would try to align the ship following the nearest normal, but because the ship is in the exact middle the distance would be the same between the two sides of the track, ergo the system would become confuse and you would probably have a spinning ship in the middle of the track if not a system crash in the worst case scenario....