New to the hobby - started in March and have about 160 feet of track down so far. I recently decided to upgrade from my LGB starter Loco and purchased an LGB 2019s off Ebay - beautiful piece with what appears to be little run-time. The sound and smoke work great but the Loco does not have much pulling power. My Starter Loco and motorized tender will pull 10 cars around my layout but the 2019s will only pull 2 cars and stalls badly on the 4% grade I have in one area. This thing seems like it should be a beast - do I have a dud (and can that be fixed) or are my expectations out-of-line? Using a PIKO 5A power supply. Appreciate any guidance!