Peco electrofrogs shorting ????

[Steamtrains]

There is internal wiring in Electrofrogs. It's a jumper between the wing rails and the frog, but you have "neutered" it with those cuts. You seem to have a crossover set up here. Are the frog rails from the other side also isolated..?? Also, where is the power coming from..?? Are there any power feeds in there somewhere..?? All these factors might play a role in shorting out when the switch is thrown.
Don't ask me how I know... :oops: