MDC 2 Truck Shay

[nachoman]

It's the MDC worm shafts that are in the trucks. I went to place the NWSL female cups on the end of the shaft and Lo and Behold, the hole in the NWSL cup was to large. Otherwise, everything has gone well with the conversion of MDC parts to NWSL parts.

oh, i gotcha. Perhaps MDC changed the size of the shaft during production. I'd contact NWSL, because they make universals for many size shafts.