Jim and Cheyenne are talking about what he's found out so far. Jim leans back against the wall on his bunk. The next shot shows him sitting upright in his bunk.
Ike's last name (mentioned at least 3 times during show) is Thompson but the credits show him as Johnson.
Mary relights a kerosene lamp just moments after Cheyenne blows it out, without worrying about the hot glass.