When Mincayani is in the wood shop, he sticks his index finger in the paint/wood stain, the very next scene, all of his fingers appear to be wet, but not red.
In one scene, the rope connected to the bucket suspended from the airplane is cut with a knife by a person in the plane. In the very next shot, the rope is still connected to the plane.
As the bright yellow Piper is maneuvering over the jungle in the mid-1950s, we briefly see a view of the top of the plane, and there we see the one object that isn't yellow - the white Garmin GPS antenna.