Dear @roadofrich,

There must be a bug regarding the way how probabilities are calculated at the Flat Lands near Daejeon. It shows that you will get 5 to 10 pieces of Leather with a 80% probability, but my experience shoes much much worse rewards.

I hope you are able to check the logs, but many many times, having 6 mercenaries hunting Oxen, the reward was zero from all six runs. That can not be 80%...