Hello all, I am relatively new to Z and have a loop of Micro Track, an AZL GP-38 and a few cars. I recently purchased a German Märklin locomotive (88587), and when I attempt to run it, the power pack shorts out, with no response from the locomotive other than a flicker of lights. My AZL loco runs fine on the same set-up. Is there a compatibility issue that I missed, or is it perhaps a locomotive defect? Any information would be greatly appreciated.