Yesterday we installed a Lionel operating track on the layout. This is the first of two we plan on installing. We are using the standard Lionel tubular track, and this is the traditional operating track section -- with the red bulls-eye in the middle and the five rails, operated by the black two button controller. In any event, all went well until we ran my son's new Williams Alco Fa1. For whatever reason, this locomotive, and the two dummy units (A and B), cause the circuit breaker to trip. (We are using Lionel TMCC with a Cab 1, each loop powered by a 180 watt powerhouse.) No other locomotive does this, and I am a bit stumped. As a complete stab in the dark, I took the Williams powered unit off the track and applied electrical tape to the bottom of the fuel tank -- this engine has a nice sized metal tank that hangs relatively low, and I thought perhaps that was causing the issue somehow -- coming too close to the bulls-eye (?) -- just a guess on my part. It helped a little -- I can "nurse" the loco through the operating track section without throwing the breaker, but it's an iffy proposition at best. The operating track seems to work just fine, and this issue does not happen with any other engine, as I said.
Anyone have any thoughts here? I'd hate to restrict the Alco to the inside loop, but right now I have no idea of how to address the issue, short of removing these operating track sections, which I do not want to do. Many thanks in advance for any leads / help.