Audio problem: When everyone is running after the police car, we hear Robin shout "Hey guys! Joey, c'mon!" but her mouth is shut. (00:14:05)
Audio problem: When Junior is riding his motorbike around, screaming "they hurt me, ma," in many wideshots we hear him yell but his mouth is closed. (00:55:20)
Answer: Yes, originally Tommy was going to be the new Jason. But the makers decided to go in a different direction for part 6.