Plot hole: If Chester's plan was to steal the machine the entire time why didn't he just have his people steal the machine while it was still floating in the air during the first film? There was plenty of time to capture it before the food started mutating so what was he waiting for if he needed it so bad?
Suggested correction: Because he wasn't there in the first film? He first made an appearance in this film, doesn't know how to work the machine without Flint, and how the hell would he even get it in the sky? He also didn't even know about it, or what happened to Chew and Swallow, again, until he made an appearance in this film. Not a mistake.