Im new to model railroading, adding two switches to my layout. I'm using MTH realtrax 0-31 switches. The problem is the train will operate only on the part of the track the power is connected to, but once it reaches a switch, it shuts down and wont move. I have checked and rechecked the instructions, but it all looks right. Any ideas what I'm doing wrong?? If you look under the track, it appears that one of the brass connectors on the outside rail is not there as it is on all my other tracks. Is this right because its a switch? Probibly dumb question, but gotta start somewhere... Thanks!