When Montana is brought into Delano Prison, he is put in the cell next to Wallace. The next morning when the guard comes to get Montana for the visit with his daughter, he is in the last cell, 3 or 4 cells away from Wallace.
When Miklo shoots Spider, he falls down a hill, and lands dead on the road, in the first scene his arms are at his sides, in the second scene his arms are stretched above his head, then back at his side again.
When Miklo and La Onda are rioting in prison due to Montana's death, you can see Spider's chain when he has his back facing the camera but when the camera goes back and forth, the chain is no longer visible.
In prison where Magic Mike and Miklo are talking, Miklo leans over to whisper something to Magic. If you look at Miklo's shoulders, you can see his singlet tan that he must have gotten while shooting the scenes in the beginning, but that part was at least 5 years before.