Is there anyone out there who is a real Trainz veteran that would know why sometimes a switch will refuse to throw for an A.I. train?  This usually happens when one of my A.I. trains is unloading and needs to get past a switch to finish the job.  The switch will just sit there, seemingly oblivious to the engineer's needs. Replacing the switch doesn't always fix the problem.
   Replacing the switch doesn't always fix the problem.
				
			 Replacing the switch doesn't always fix the problem.
   Replacing the switch doesn't always fix the problem.
