During the poker game, Curly holds an Ace of Hearts and an Ace of Diamonds, while Moe holds an Ace of Spades and an Ace of Clubs. After they exchange cards under the table, they both hold Aces of Spades and Clubs.
Curly is shown turning the meat grinder handle with ground up meat coming out.
Once the bullets fall into the grinder the ground up meat coming out of the grinder is now completely gone.
Two men are shown carrying the 3 dead crooked poker players. Given an average weight of 180 pounds per man, these two men are shown nonchalantly carrying 540 lbs without struggling.
When Larry is going to blow in Mozier to get mud out, you can see the string attached to mud on the other side of Moe's head before the mud flies off Mose head into curly.