Hi, first time poster. I was cleaning some things out of my closet when I found an old cigar box with a Z scale train set in it. I believe they were my dad's that he gave to me at some point. They look to be in good shape; there are no missing parts or signs of wear, only some dust. They've been sitting safe in their boxes for I don't know how long...I haven't played with them so I'm pretty sure the last person to use them was my Dad. I'm not really a train guy, but I think this is a pretty cool find; I used to avidly fly RC and build up balsa and injection molded models, so I would love to get the set running again. Unfortunately I can't ask my Dad for specifics, as he's passed on, but any information on the age and or locomotive would be greatly appreciated. I've heard that the locomotives need to be serviced periodically, but I'm not sure what that entails. I can't really find any dates on any of the boxes or cars; the only markings on the engine are 'Trix' and 'West Germany'. Could anybody link me to a service manual? Photos are below.