Hello! i only recently got my firts ever atlas locomotive, a U34CH. now i have an ALP44 and B40-8. I figured out he ALP 44 pretty quick, but the other two stumped me. I instincively removed the couplers. then i tryed gently lifting the shell off. nothing. i only found screws on the U34CH, and even when unscrewed, the shell wouldn't budge. I'm afraid to try on the B40-8 because there is a chain going from the front truck on the right side to under the cab, and i don't want to bust it. The reason is so that i can install a decoder in these locomotives when i get the decoders.