I just got off the phone with customer service regarding a new railtruck that won't run due to split gears (it's a replacement of an earlier one that died).  The CS representative told me that they are no longer replacing bad railtrucks with new ones, and when I inquired she did not offer the option of replacement gears.  Instead, I was offered my choice of road names for a rail bus as a replacement for the truck.  I already have a bus, and I'm not sure I want another, so I'm not quite sure what to do at this point.  Does anyone know of NWSL may be making a metal replacement for the railtruck gear like they do for the shay?

I had the same issue with my Shay.  It turned out that one of the angled contact wires from the truck had shifted upward and was catching a bit when it turned.  Try loosening the truck bolster screw all the way until you can remove the truck, then check the two angled copper wires that form the electrical contacts.  On mine, one protruded from the truck center higher than the other, and after I gently pushed it back down, the problem was solved.

I hope yours turns out to be as easy to fix as mine was!

90Duck