When Joseph Campanella's character sabotages the stage coach, he turns the lug nut to the left, which would actually tighten it, not loosen it.
The poker chips used in the game are obviously 1960s era poker chips that look and sound like plastic, not a material used in the old west.
Victoria Barkley has always been a shrewd businesswoman, but her open discussions in a patron-filled bar with the bartender-owner over borrowing $5,000.00 is highly dubious. Let alone the bartender loudly announcing the denomination and handing the enveloped money to Heath. Bear in mind, that $5,000.00 equates to $104,199.62 in 1870, and even in 1967, it equates to $39,586.00.