The design hasn't changed I suspect. I have the earlier PS/3 version and a PS/2 one that I'm going to convert to TMCC. For both of them, I had to tinker with the rear truck to get decent performance. I have my PS/3 one pulling the ten cars around the club, including the 2% grade, so I think that one is done. I believe the other one will probably do it as well, but I'll wait until I do the conversion to tinker with it's trucks. Adding weight will probably help as well.
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