During Dillon's fight with Traych, it's obvious that stuntmen are being used for the long shots.
In the closing shot, Chester is on a buckboard with his right leg bent and his left stiff. Normally, it's the other way around. Perhaps the footage is reversed for some reason.
The footage is indeed reversed, because just before the scene fades out you can see that Matt's holster is on his left side.
When Dillon and Chester draw their guns on the two guys in the wagon, "Gunner" asks several times if it's a holdup. But Dillon's badge can be plainly seen, so "Gunner" should realize that Dillon's a lawman, not a holdup man.