https://github.com/CovertJaguar/Railcraft/blob/mc-1.10.2/src/main/java/mods/railcraft/common/worldgen/VillagerTrades.java#L52-L61

Currently the locomotive and the track kit trade does not work as intended. It does not show up in the trades.

This issue simply aims to fix existing trades, so I kept it for 10.2

Found out it is an issue with stages