Other mistake: After the stagecoach crashes and Mary discovers that neither Marge nor Adam can move, she tells Adam that she's going to leave the canteen for him and Marge. Neither one can move. Neither one is going to get the canteen to the other.
Rattlers' Class of '63 - S3-E8
Other mistake: Elayne Heilveil portrays Regine in this episode. Her last name is misspelled as "Heilviel" in the opening credits at the start. (00:01:40)
Other mistake: Oscar plays several clips of Steve using his bionic arm, but these shots are taken from earlier episodes in which no CCTV - or any form of surveillance - was present during those moments, making their inclusion here completely implausible.