My DH165AO decoder i preordered just came. At first i was out of luck, because it didn't fit in the intended locomotive (atlast B40-8 ). I had another atlas U34CH that needed a decoder, and since the instruction manual demonstrated with an atlas U33C, i just put it in there, figuring there was no way there could be a problem. the locomotive runs fine, it slows and stops, no weird noises, nothing. the only bizarre problem is that the headlight is dim, and does not light at all in the back. Perhaps this is a problem with the lights? I'm really hoping i didn't get a 3rd shot decoder in a row... Is there anyway i can check for issues here? the decoder shows no sign of damage. I did notice in DC operation that the lights were kinda dim, but not so excessivly dim as this.