Very new to multi-track layouts. I added (2) 0-27 switches to my layout to add a siding. Both where modified to be powered from a separate transformer (Lionel instructions) I have 14 volts going to the switches at all times and they both switch through a single controller. Each switch has a fiber pin on the inside rail of the straight thru track and the inside and center track of the siding track. common ground to the inside rail of the siding track. When the train runs across the switch, I get sparks at the wheels when it hits either switches. When the train is crossing the 2nd switch, the first one vibrates. Any help would be appreciated.