A problem with my USRA 0-6-0

[Ivo Hugh]

Hello. I have a few number of engines made by Bachmann. My FT-A and GP40 work really fine, but my USRA 0-6-0 always reads as "Derailed" on my DCC controller. (Indicated by the flashing lights) I have found out that there is a problem with the copper plate underneath the engine. I had practically the same copper plate on my Prairie 2-6-2, which is built off the same chassis. I tried swapping out the plates, but to no avail. Does anybody have advice? I would greatly appreciate it.