When Gary first appears, blood is dripping from his left ear, but in later scenes, it's dripping only from his right and there's no trace of blood around his left.
At about 57 mins, Liam tells Brittany he's just remembered he has a signal booster in the Winnebago, but he mentioned it to the others earlier.
At about 55 mins, Liam says Gabriel crushed his phone, but Liam was running away from the motor home and didn't see that happen.