So I finally pulled out both the PG MF and the 144th scale MF. I compared the two kits with respect to the front and back gear boxes, and I compared both kits to the pictures of the 3D printed boxes. And the boxes do, in fact, look like they stick out to the side too far, compared with the 144th scale kit. My guestimate is one-forth of an inch, at least. The boxes on the 144th scale kit are almost exactly, if not exactly, lined up with each other. When I measured the width of the rear box, it seems like the PG kit is about one-quarter of inch narrower than the 144th scale kit. There's a lot going on here.
If my measurements are correct, than part of the issue is that the 144th rear box is too wide (and wider than the rear box of the PG kit), and the front boxes on the 144th kit line up with the "too-wide" rear box. And the scaled up 3D parts are, thus, too wide for the PG kit.
I didn't use photos of the filming model, so it's all bunk anyway.
There may be issues with how the pics were taken and/or how the 3D parts are set on the PG kit.
It's been stated that the 144th kit is the basis for this set and I don't really know what that entails.
Looking forward to comments. I don't want to trash this aftermarket kit, but as it is, I won't buy it, as much of an ESB guy that I am. And if I'm right and there is a "corrected" item that hits the market, then I have something to think about.
Mike Todd