Yeah, I think I hadn't locked those tabs in when I took that photo (I was mucking around w/ this toy in the car while waiting for the wife to finish her shopping

); I locked it in later but was ceebs to take another shot.

It still leaves a gap though (as can be seen in your pics), just not as big. But that panel certainly doesn't sit flush. And while I can see the merit in your modified transformation of Grimlock, as you rightfully pointed out, the official transformation has the chest panels swung down which exposes robot kibble from the sides, although your config would reveal more robot kibble from front on.