All the snow drifting, wound up freezing the chairs in the rails, so it took a while a to get them moving and keep moving without triggering any faults. As for Challenge, same thing, and it was kept running all day due to it snowing most the day and if it were to be stopped the chairs might not want to cooperate and move when turned back on again, hence why it ran all day and loaded no one. So neither lift had any actual problems thankfully