When Preston jumped in to kick Gamegoblin, he was originally going to perform a slash in the shot but, when it cuts away, he performs the kick.
Someone says "Look, Mrs. Finch has your game," It should be Monty talking to Victor (backs to the camera), but the voice sounds feminine. If it truly is the voice of actor Caleb Bendit who plays Monty, it is uncharacteristically high-pitched and too female in tone for audiences to catch that it's Monty speaking.
Gamegoblin's controller beam would disengage every time he'd run out of power. He gigantified in the Rangers' first Final Attack and hit the Rangers' Zord formations multiple times with his controller beam. With no one playing the Game Goblin game any longer (through which Game Goblin derived his energy), he shouldn't've had any power left to fire his controller beam, yet he managed it three times.