I'm running some of LGB's Amtrak Amfleet cars off of a MRC Command 2000 and a Power Station 8. If one or more of the cars' lights are switched on when I start sending DCC signals and power to the track, everything is shorted out and nothing will run. I can hear that buzzing coming from each car. If I then switch off the lights or tilt the cars so one side is off the track, everything comes back on and works fine, for a while. If the lights are left switched on, the trains will, after a while, stop and everything will be shorted out. If I repeat the switch-off/tilt fix, everything comes back on. I don't even need to reset the Command 2000. Everything's fine if the lights are left switched off. If the Command 2000 is connected directly to the tracks, without the Power Station 8, everything's fine, including the lights. Does anyone know what's going on?