Only the Bad Come to Sonora - S4-E3
Continuity mistake: The number of outlaws in the gang mysteriously increases during one chase scene. For most of the episode, there are only three of them. When they gallop off after Manolito, there are suddenly five. Next scene, there are three again. (00:20:35)
Only the Bad Come to Sonora - S4-E3
Continuity mistake: One of the bad guys rides the stolen black stallion throughout the episode - except when the gang rides away from the cantina. Then, all their horses are brown. Once they're out in the desert, the black horse reappears. (00:23:25)
Only the Bad Come to Sonora - S4-E3
Plot hole: Manolito trades clothes with the poor peon he meets on the road. But at the end of the episode, he has the same clothes that he gave away earlier (his usual outfit) back on again.