I am resurrecting a basket case that was already on the museum layout when I started there. Everything critical to running is present save one of the two drive worms. Anyone happen to have one, either on or off the intermediate drive shaft ? Reckon I would have any luck calling Walthers? The gallows is also in rough shape, but it can be repaired. I haven't seen good reports on this unit, but there it is on the layout, so either get it going or trash it!!