In TMR17 when I place a level crossing (Tside-1t level crossing) two downward arrows appear on the road sides. The tracks readily snap on the track spline points but the roads never snap on the road spline points. If a gap remains between the road and the crossing the cars don't go through. Sometimes the roads will just connect with each other over the crossing and the cars will go through but when the train comes and the gates go down the cars still keep going as they roads are not really connected to the crossing. What is the procedure to make the roads connect properly?